func main() {
// This imitates the functionality of rtnl_wilddump_req_filter from bridge/vlan.c in the
// iproute2 code. Note that the filter requires kernel 3.9 or newer
data := make([]byte, 4)
binary.LittleEndian.PutUint32(data, link.RTEXT_FILTER_BRVLAN)
lnmsg := link.NewHeader(rtnetlink.AF_BRIDGE, 0, 0, 0, 0)
msg := rtnetlink.NewMessage(lnmsg, []netlink.Attribute{{link.IFLA_EXT_MASK, data}})
nlmsg, err := netlink.NewMessage(rtnetlink.RTM_GETLINK, netlink.NLM_F_DUMP|netlink.NLM_F_REQUEST, msg)
if err != nil {
log.Panicf("Couldn't construct message: %v", err)
}
nlsock, err := netlink.Dial(netlink.NETLINK_ROUTE)
if err != nil {
log.Panicf("Couldn't dial netlink: %v", err)
}
h := netlink.NewHandler(nlsock)
ec := make(chan error)
go h.Start(ec)
c, err := h.Query(*nlmsg, 1)
if err != nil {
log.Panicf("Couldn't write netlink: %v", err)
}
for i := range c {
if i.Header.MessageType() == netlink.NLMSG_DONE {
break
}
switch i.Header.MessageType() {
case rtnetlink.RTM_NEWLINK:
hdr := &link.Header{}
msg := rtnetlink.NewMessage(hdr, nil)
err = msg.UnmarshalNetlink(i.Body)
if err == nil {
log.Printf("Link[%d] (Family: %v; Type: %v; Flags: %v; Changes: %v)",
hdr.InterfaceIndex(),
hdr.InterfaceFamily(), hdr.InterfaceType(), hdr.Flags(),
hdr.InterfaceChanges())
for i := range msg.Attributes {
log.Printf("Attribute[%d]: %v", i, msg.Attributes[i])
}
} else {
log.Printf("Unmarshal error: %v", err)
}
default:
log.Printf("Unknown type: %v", i)
}
}
}
func ParseMessage(msg netlink.Message) (ret *rtnetlink.Message, err error) {
hdr := &Header{}
ret = rtnetlink.NewMessage(hdr, nil)
err = ret.UnmarshalNetlink(msg.Body)
if err != nil {
ret = nil
return
}
return
}
func main() {
nlmsg, err := netlink.NewMessage(rtnetlink.RTM_GETADDR, netlink.NLM_F_DUMP|netlink.NLM_F_REQUEST, &addr.Header{})
if err != nil {
log.Panicf("Couldn't construct message: %v", err)
}
//log.Printf("Dialing: %v", nlmsg)
nlsock, err := netlink.Dial(netlink.NETLINK_ROUTE)
if err != nil {
log.Panicf("Couldn't dial netlink: %v", err)
}
h := netlink.NewHandler(nlsock)
ec := make(chan error)
go logec(ec)
go h.Start(ec)
//log.Printf("Sending query: %v", nlmsg)
c, err := h.Query(*nlmsg, 1)
//log.Printf("Sent query: %v", nlmsg.Header)
if err != nil {
log.Panicf("Couldn't write netlink: %v", err)
}
for i := range c {
if i.Header.MessageType() == netlink.NLMSG_DONE {
break
}
switch i.Header.MessageType() {
case rtnetlink.RTM_NEWADDR:
hdr := &addr.Header{}
msg := rtnetlink.NewMessage(hdr, nil)
err = msg.UnmarshalNetlink(i.Body)
if err == nil {
log.Printf("Family: %s; Length: %d; Flags: %v; Scope: %v; IFIndex: %d",
hdr.AddressFamily(), hdr.PrefixLength(), hdr.Flags(), hdr.Scope(),
hdr.InterfaceIndex())
for i := range msg.Attributes {
attr := msg.Attributes[i]
log.Printf("Attribute[%s] = %v", addr.AttributeTypeStrings[attr.Type], attr.Body)
}
} else {
log.Printf("Unmarshal error: %v", err)
}
default:
log.Printf("Unknown type: %v", i)
}
if err != nil {
log.Printf("Handler error: %v", err)
}
}
}
func main() {
nlmsg, err := netlink.NewMessage(xfrm.XFRM_MSG_GETPOLICY, netlink.NLM_F_DUMP|netlink.NLM_F_REQUEST, &link.Header{})
if err != nil {
log.Panicf("Couldn't construct message: %v", err)
}
nlsock, err := netlink.Dial(netlink.NETLINK_XFRM)
if err != nil {
log.Panicf("Couldn't dial netlink: %v", err)
}
h := netlink.NewHandler(nlsock)
ec := make(chan error)
go h.Start(ec)
c, err := h.Query(*nlmsg, 1)
if err != nil {
log.Panicf("Couldn't write netlink: %v", err)
}
for i := range c {
if i.Header.MessageType() == netlink.NLMSG_DONE {
break
}
if i.Header.MessageType() == netlink.NLMSG_ERROR {
emsg := &netlink.Error{}
err = emsg.UnmarshalNetlink(i.Body)
if err == nil && emsg.Code() != 0 {
log.Printf("Netlink error: %v", emsg.Error())
}
break
}
switch i.Header.MessageType() {
case xfrm.XFRM_MSG_NEWPOLICY:
hdr := &xfrm.Header{}
msg := rtnetlink.NewMessage(hdr, nil)
err = msg.UnmarshalNetlink(i.Body)
if err == nil {
log.Printf("Policy: %v", hdr)
for i := range msg.Attributes {
log.Printf("Attribute[%d]: %v", i, msg.Attributes[i])
}
} else {
log.Printf("Unmarshal error: %v", err)
}
default:
log.Printf("Unknown type: %v", i)
}
}
}
func main() {
nlmsg, err := netlink.NewMessage(rtnetlink.RTM_GETROUTE, netlink.NLM_F_DUMP|netlink.NLM_F_REQUEST, &link.Header)
if err != nil {
log.Panicf("Couldn't construct message: %v", err)
}
nlsock, err := netlink.Dial(netlink.NETLINK_ROUTE)
if err != nil {
log.Panicf("Couldn't dial netlink: %v", err)
}
h := netlink.NewHandler(nlsock)
ec := make(chan error)
go h.Start(ec)
c, err := h.Query(*nlmsg, 1)
if err != nil {
log.Panicf("Couldn't write netlink: %v", err)
}
for i := range c {
if i.Header.MessageType() == netlink.NLMSG_DONE {
break
}
switch i.Header.MessageType() {
case rtnetlink.RTM_NEWROUTE:
hdr := &route.Header{}
msg := rtnetlink.NewMessage(hdr, nil)
err = msg.UnmarshalNetlink(i.Body)
if err == nil {
log.Printf("Route: %v (%d/%d) TOS: %d; (Table: %v; Origin: %v; Scope: %v; Type: %v; Flags: %v",
hdr.AddressFamily(), hdr.AddressDestLength(), hdr.AddressSourceLength(),
hdr.TOS(), hdr.RoutingTable(), hdr.RouteOrigin(), hdr.AddressScope(),
hdr.RouteType(), hdr.Flags())
for i := range msg.Attributes {
log.Printf("Attribute[%d]: (%v) %v", i, route.AttributeTypeStrings[msg.Attributes[i].Type], msg.Attributes[i])
}
} else {
log.Printf("Unmarshal error: %v", err)
}
default:
log.Printf("Unknown type: %v", i)
}
}
}
func main() {
nlmsg, err := netlink.NewMessage(rtnetlink.RTM_GETLINK, netlink.NLM_F_DUMP|netlink.NLM_F_REQUEST, &link.Header{})
if err != nil {
log.Panicf("Couldn't construct message: %v", err)
}
nlsock, err := netlink.Dial(netlink.NETLINK_ROUTE)
if err != nil {
log.Panicf("Couldn't dial netlink: %v", err)
}
h := netlink.NewHandler(nlsock)
ec := make(chan error)
go h.Start(ec)
c, err := h.Query(*nlmsg, 1)
if err != nil {
log.Panicf("Couldn't write netlink: %v", err)
}
for i := range c {
if i.Header.MessageType() == netlink.NLMSG_DONE {
break
}
switch i.Header.MessageType() {
case rtnetlink.RTM_NEWLINK:
hdr := &link.Header{}
msg := rtnetlink.NewMessage(hdr, nil)
err = msg.UnmarshalNetlink(i.Body)
if err == nil {
log.Printf("Link[%d] (Family: %v; Type: %v; Flags: %v; Changes: %v)",
hdr.InterfaceIndex(),
hdr.InterfaceFamily(), hdr.InterfaceType(), hdr.Flags(),
hdr.InterfaceChanges())
for i := range msg.Attributes {
log.Printf("Attribute[%d]: %v", i, msg.Attributes[i])
}
} else {
log.Printf("Unmarshal error: %v", err)
}
default:
log.Printf("Unknown type: %v", i)
}
}
}