syscall: add if_announce support for netbsd

Update #4866.

R=golang-dev, bradfitz, dave
CC=golang-dev
https://golang.org/cl/7382052

src/pkg/syscall/types_netbsd.go

@@ -171,11 +171,12 @@ type FdSet C.fd_set
 // Routing and interface messages
 
 const (
-	SizeofIfMsghdr  = C.sizeof_struct_if_msghdr
-	SizeofIfData    = C.sizeof_struct_if_data
-	SizeofIfaMsghdr = C.sizeof_struct_ifa_msghdr
-	SizeofRtMsghdr  = C.sizeof_struct_rt_msghdr
-	SizeofRtMetrics = C.sizeof_struct_rt_metrics
+	SizeofIfMsghdr         = C.sizeof_struct_if_msghdr
+	SizeofIfData           = C.sizeof_struct_if_data
+	SizeofIfaMsghdr        = C.sizeof_struct_ifa_msghdr
+	SizeofIfAnnounceMsghdr = C.sizeof_struct_if_announcemsghdr
+	SizeofRtMsghdr         = C.sizeof_struct_rt_msghdr
+	SizeofRtMetrics        = C.sizeof_struct_rt_metrics
 )
 
 type IfMsghdr C.struct_if_msghdr
@@ -184,6 +185,8 @@ type IfData C.struct_if_data
 
 type IfaMsghdr C.struct_ifa_msghdr
 
+type IfAnnounceMsghdr C.struct_if_announcemsghdr
+
 type RtMsghdr C.struct_rt_msghdr
 
 type RtMetrics C.struct_rt_metrics

src/pkg/syscall/zerrors_netbsd_386.go

@@ -572,6 +572,8 @@ const (
 	ICANON                            = 0x100
 	ICRNL                             = 0x100
 	IEXTEN                            = 0x400
+	IFAN_ARRIVAL                      = 0x0
+	IFAN_DEPARTURE                    = 0x1
 	IFA_ROUTE                         = 0x1
 	IFF_ALLMULTI                      = 0x200
 	IFF_BROADCAST                     = 0x2

src/pkg/syscall/zerrors_netbsd_amd64.go

@@ -562,6 +562,8 @@ const (
 	ICANON                            = 0x100
 	ICRNL                             = 0x100
 	IEXTEN                            = 0x400
+	IFAN_ARRIVAL                      = 0x0
+	IFAN_DEPARTURE                    = 0x1
 	IFA_ROUTE                         = 0x1
 	IFF_ALLMULTI                      = 0x200
 	IFF_BROADCAST                     = 0x2

src/pkg/syscall/zerrors_netbsd_arm.go

@@ -562,6 +562,8 @@ const (
 	ICANON                            = 0x100
 	ICRNL                             = 0x100
 	IEXTEN                            = 0x400
+	IFAN_ARRIVAL                      = 0x0
+	IFAN_DEPARTURE                    = 0x1
 	IFA_ROUTE                         = 0x1
 	IFF_ALLMULTI                      = 0x200
 	IFF_BROADCAST                     = 0x2

src/pkg/syscall/ztypes_netbsd_386.go

@@ -219,11 +219,12 @@ type FdSet struct {
 }
 
 const (
-	SizeofIfMsghdr  = 0x98
-	SizeofIfData    = 0x84
-	SizeofIfaMsghdr = 0x18
-	SizeofRtMsghdr  = 0x78
-	SizeofRtMetrics = 0x50
+	SizeofIfMsghdr         = 0x98
+	SizeofIfData           = 0x84
+	SizeofIfaMsghdr        = 0x18
+	SizeofIfAnnounceMsghdr = 0x18
+	SizeofRtMsghdr         = 0x78
+	SizeofRtMetrics        = 0x50
 )
 
 type IfMsghdr struct {
@@ -272,6 +273,15 @@ type IfaMsghdr struct {
 	Pad_cgo_0 [6]byte
 }
 
+type IfAnnounceMsghdr struct {
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Index   uint16
+	Name    [16]int8
+	What    uint16
+}
+
 type RtMsghdr struct {
 	Msglen    uint16
 	Version   uint8

src/pkg/syscall/ztypes_netbsd_amd64.go

@@ -226,11 +226,12 @@ type FdSet struct {
 }
 
 const (
-	SizeofIfMsghdr  = 0x98
-	SizeofIfData    = 0x88
-	SizeofIfaMsghdr = 0x18
-	SizeofRtMsghdr  = 0x78
-	SizeofRtMetrics = 0x50
+	SizeofIfMsghdr         = 0x98
+	SizeofIfData           = 0x88
+	SizeofIfaMsghdr        = 0x18
+	SizeofIfAnnounceMsghdr = 0x18
+	SizeofRtMsghdr         = 0x78
+	SizeofRtMetrics        = 0x50
 )
 
 type IfMsghdr struct {
@@ -278,6 +279,15 @@ type IfaMsghdr struct {
 	Pad_cgo_0 [6]byte
 }
 
+type IfAnnounceMsghdr struct {
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Index   uint16
+	Name    [16]int8
+	What    uint16
+}
+
 type RtMsghdr struct {
 	Msglen    uint16
 	Version   uint8

src/pkg/syscall/ztypes_netbsd_arm.go

@@ -219,11 +219,12 @@ type FdSet struct {
 }
 
 const (
-	SizeofIfMsghdr  = 0x98
-	SizeofIfData    = 0x84
-	SizeofIfaMsghdr = 0x18
-	SizeofRtMsghdr  = 0x78
-	SizeofRtMetrics = 0x50
+	SizeofIfMsghdr         = 0x98
+	SizeofIfData           = 0x84
+	SizeofIfaMsghdr        = 0x18
+	SizeofIfAnnounceMsghdr = 0x18
+	SizeofRtMsghdr         = 0x78
+	SizeofRtMetrics        = 0x50
 )
 
 type IfMsghdr struct {
@@ -272,6 +273,15 @@ type IfaMsghdr struct {
 	Pad_cgo_0 [6]byte
 }
 
+type IfAnnounceMsghdr struct {
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Index   uint16
+	Name    [16]int8
+	What    uint16
+}
+
 type RtMsghdr struct {
 	Msglen    uint16
 	Version   uint8