Capabilities uint32
	Lastchange   Timeval
}

type IfaMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Hdrlen  uint16
	Index   uint16
	Tableid uint16
	Pad1    uint8
	Pad2    uint8
	Addrs   int32
	Flags   int32
	Metric  int32
}

type IfAnnounceMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Hdrlen  uint16
	Index   uint16

	Capabilities uint32
	Lastchange   Timeval
}

type IfaMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Hdrlen  uint16
	Index   uint16
	Tableid uint16
	Pad1    uint8
	Pad2    uint8
	Addrs   int32
	Flags   int32
	Metric  int32
}

type IfAnnounceMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Hdrlen  uint16
	Index   uint16

}

type IfaMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	Metric  int32
}

type IfmaMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	_       [2]byte
}

type IfmaMsghdr2 struct {
	Msglen   uint16
	Version  uint8
	Type     uint8

	Capabilities uint32
	Lastchange   Timeval
}

type IfaMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Hdrlen  uint16
	Index   uint16
	Tableid uint16
	Pad1    uint8
	Pad2    uint8
	Addrs   int32
	Flags   int32
	Metric  int32
}

type IfAnnounceMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Hdrlen  uint16
	Index   uint16

	Omcasts    uint32
	Iqdrops    uint32
	Noproto    uint32
	Lastchange Timeval32
}

type IfaMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	Metric  int32
}

type RtMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Index   uint16
	Flags   int32
	Addrs   int32
	Pid     int32
	Seq     int32

	type linkLayerAddr struct {
		Type byte
		Nlen byte
		Alen byte
		Slen byte
	}
	lla := (*linkLayerAddr)(unsafe.Pointer(&b[0]))
	l := 4 + int(lla.Nlen) + int(lla.Alen) + int(lla.Slen)
	if len(b) < l {
		return nil, 0, EINVAL
	}
	b = b[4:]
	sa := &SockaddrDatalink{Type: lla.Type, Nlen: lla.Nlen, Alen: lla.Alen, Slen: lla.Slen}
	for i := 0; len(sa.Data) > i && i < l-4; i++ {
		sa.Data[i] = int8(b[i])
	}

		b.Skip("ipv6 is not supported")
	}
	benchmarkTCP(b, true, true, "[::1]:0")
}

func benchmarkTCP(b *testing.B, persistent, timeout bool, laddr string) {
	testHookUninstaller.Do(uninstallTestHooks)

	const msgLen = 512
	conns := b.N
	numConcurrent := runtime.GOMAXPROCS(-1) * 2
	msgs := 1
	if persistent {
		conns = numConcurrent
		msgs = b.N / conns
		if msgs == 0 {
			msgs = 1
		}
		if conns > b.N {

// Netlink sockets and messages

package syscall

import (
	"sync"
	"unsafe"
)

// Round the length of a netlink message up to align it properly.
func nlmAlignOf(msglen int) int {
	return (msglen + NLMSG_ALIGNTO - 1) & ^(NLMSG_ALIGNTO - 1)
}

// Round the length of a netlink route attribute up to align it
// properly.
func rtaAlignOf(attrlen int) int {

			}
			var msglen int
			for shift := uint(0); ; shift += 7 {
				if shift >= 64 {
					return ErrIntOverflowGenerated
				}
				if iNdEx >= l {
					return io.ErrUnexpectedEOF
				}
				b := dAtA[iNdEx]
				iNdEx++
				msglen |= int(b&0x7F) << shift
				if b < 0x80 {
					break
				}
			}
			if msglen < 0 {
				return ErrInvalidLengthGenerated
			}

	SizeofIPv6MTUInfo      = 0x20
	SizeofMsghdr           = 0x1c
	SizeofCmsghdr          = 0xc
	SizeofICMPv6Filter     = 0x20
)

const (
	SizeofIfMsghdr = 0x10
)

type IfMsgHdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Addrs   int32
	Flags   int32
	Index   uint16
	Addrlen uint8
	_       [1]byte
}

type FdSet struct {
	Bits [2048]int32
}