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