syscall: add network interface announce support on BSD variants
This CL allows to receive network interface arrival and depature
notifications through routing sockets on BSD variants. So far
Darwin doesn't support this feature.
Also does small simplification.
Update #4866.
R=golang-dev, lucio.dere, dave
CC=golang-dev
https://golang.org/cl/7365055
diff --git a/src/pkg/syscall/route_openbsd.go b/src/pkg/syscall/route_openbsd.go
index 30e1cac..223c157 100644
--- a/src/pkg/syscall/route_openbsd.go
+++ b/src/pkg/syscall/route_openbsd.go
@@ -6,30 +6,30 @@
package syscall
-import (
- "unsafe"
-)
+import "unsafe"
-func (any *anyMessage) toRoutingMessage(buf []byte) RoutingMessage {
+func (any *anyMessage) toRoutingMessage(b []byte) RoutingMessage {
switch any.Type {
case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
p := (*RouteMessage)(unsafe.Pointer(any))
- rtm := &RouteMessage{}
- rtm.Header = p.Header
- rtm.Data = buf[SizeofRtMsghdr:any.Msglen]
- return rtm
+ return &RouteMessage{Header: p.Header, Data: b[SizeofRtMsghdr:any.Msglen]}
case RTM_IFINFO:
p := (*InterfaceMessage)(unsafe.Pointer(any))
- ifm := &InterfaceMessage{}
- ifm.Header = p.Header
- ifm.Data = buf[SizeofIfMsghdr:any.Msglen]
- return ifm
+ return &InterfaceMessage{Header: p.Header, Data: b[SizeofIfMsghdr:any.Msglen]}
+ case RTM_IFANNOUNCE:
+ p := (*InterfaceAnnounceMessage)(unsafe.Pointer(any))
+ return &InterfaceAnnounceMessage{Header: p.Header}
case RTM_NEWADDR, RTM_DELADDR:
p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
- ifam := &InterfaceAddrMessage{}
- ifam.Header = p.Header
- ifam.Data = buf[SizeofIfaMsghdr:any.Msglen]
- return ifam
+ return &InterfaceAddrMessage{Header: p.Header, Data: b[SizeofIfaMsghdr:any.Msglen]}
}
return nil
}
+
+// InterfaceAnnounceMessage represents a routing message containing
+// network interface arrival and depature information.
+type InterfaceAnnounceMessage struct {
+ Header IfAnnounceMsghdr
+}
+
+func (m *InterfaceAnnounceMessage) sockaddr() (sas []Sockaddr) { return nil }
