package netlink import ( "fmt" "syscall" "github.com/vishvananda/netlink/nl" ) func LinkGetProtinfo(link Link) (Protinfo, error) { return pkgHandle.LinkGetProtinfo(link) } func (h *Handle) LinkGetProtinfo(link Link) (Protinfo, error) { base := link.Attrs() h.ensureIndex(base) var pi Protinfo req := h.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 } pi = *parseProtinfo(infos) return pi, nil } } return pi, fmt.Errorf("Device with index %d not found", base.Index) } func parseProtinfo(infos []syscall.NetlinkRouteAttr) *Protinfo { 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]) case nl.IFLA_BRPORT_PROXYARP: pi.ProxyArp = byteToBool(info.Value[0]) case nl.IFLA_BRPORT_PROXYARP_WIFI: pi.ProxyArpWiFi = byteToBool(info.Value[0]) } } return &pi }