mirror of https://github.com/vishvananda/netlink
84 lines
1.7 KiB
Go
84 lines
1.7 KiB
Go
|
package netlink
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"syscall"
|
||
|
|
|
||
|
|
"github.com/vishvananda/netlink/nl"
|
||
|
|
)
|
||
|
|
|
||
|
|
type Protinfo struct {
|
||
|
|
Hairpin bool
|
||
|
|
Guard bool
|
||
|
|
FastLeave bool
|
||
|
|
RootBlock bool
|
||
|
|
Learning bool
|
||
|
|
Flood bool
|
||
|
|
}
|
||
|
|
|
||
|
|
func boolToByte(x bool) []byte {
|
||
|
|
if x {
|
||
|
|
return []byte{1}
|
||
|
|
}
|
||
|
|
return []byte{0}
|
||
|
|
}
|
||
|
|
|
||
|
|
func byteToBool(x byte) bool {
|
||
|
|
if uint8(x) != 0 {
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
|
||
|
|
func LinkGetProtinfo(link Link) (Protinfo, error) {
|
||
|
|
base := link.Attrs()
|
||
|
|
ensureIndex(base)
|
||
|
|
var pi Protinfo
|
||
|
|
req := nl.NewNetlinkRequest(syscall.RTM_GETLINK, syscall.NLM_F_DUMP)
|
||
|
|
msg := nl.NewIfInfomsg(syscall.AF_BRIDGE)
|
||
|
|
req.AddData(msg)
|
||
|
|
msgs, err := req.Execute(syscall.NETLINK_ROUTE, 0)
|
||
|
|
if err != nil {
|
||
|
|
return pi, err
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, m := range msgs {
|
||
|
|
ans := nl.DeserializeIfInfomsg(m)
|
||
|
|
if int(ans.Index) != base.Index {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
attrs, err := nl.ParseRouteAttr(m[ans.Len():])
|
||
|
|
if err != nil {
|
||
|
|
return pi, err
|
||
|
|
}
|
||
|
|
for _, attr := range attrs {
|
||
|
|
if attr.Attr.Type != syscall.IFLA_PROTINFO|syscall.NLA_F_NESTED {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
infos, err := nl.ParseRouteAttr(attr.Value)
|
||
|
|
if err != nil {
|
||
|
|
return pi, err
|
||
|
|
}
|
||
|
|
var pi Protinfo
|
||
|
|
for _, info := range infos {
|
||
|
|
switch info.Attr.Type {
|
||
|
|
case nl.IFLA_BRPORT_MODE:
|
||
|
|
pi.Hairpin = byteToBool(info.Value[0])
|
||
|
|
case nl.IFLA_BRPORT_GUARD:
|
||
|
|
pi.Guard = byteToBool(info.Value[0])
|
||
|
|
case nl.IFLA_BRPORT_FAST_LEAVE:
|
||
|
|
pi.FastLeave = byteToBool(info.Value[0])
|
||
|
|
case nl.IFLA_BRPORT_PROTECT:
|
||
|
|
pi.RootBlock = byteToBool(info.Value[0])
|
||
|
|
case nl.IFLA_BRPORT_LEARNING:
|
||
|
|
pi.Learning = byteToBool(info.Value[0])
|
||
|
|
case nl.IFLA_BRPORT_UNICAST_FLOOD:
|
||
|
|
pi.Flood = byteToBool(info.Value[0])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return pi, nil
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return pi, fmt.Errorf("Device with index %d not found", base.Index)
|
||
|
|
}
|