1 // Copyright 2013 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
5 // +build darwin dragonfly freebsd linux netbsd openbsd solaris windows
13 "golang.org/x/net/bpf"
14 "golang.org/x/net/internal/socket"
17 func (so *sockOpt) getMulticastInterface(c *socket.Conn) (*net.Interface, error) {
18 n, err := so.GetInt(c)
22 return net.InterfaceByIndex(n)
25 func (so *sockOpt) setMulticastInterface(c *socket.Conn, ifi *net.Interface) error {
30 return so.SetInt(c, n)
33 func (so *sockOpt) getICMPFilter(c *socket.Conn) (*ICMPFilter, error) {
34 b := make([]byte, so.Len)
35 n, err := so.Get(c, b)
39 if n != sizeofICMPv6Filter {
40 return nil, errOpNoSupport
42 return (*ICMPFilter)(unsafe.Pointer(&b[0])), nil
45 func (so *sockOpt) setICMPFilter(c *socket.Conn, f *ICMPFilter) error {
46 b := (*[sizeofICMPv6Filter]byte)(unsafe.Pointer(f))[:sizeofICMPv6Filter]
50 func (so *sockOpt) getMTUInfo(c *socket.Conn) (*net.Interface, int, error) {
51 b := make([]byte, so.Len)
52 n, err := so.Get(c, b)
56 if n != sizeofIPv6Mtuinfo {
57 return nil, 0, errOpNoSupport
59 mi := (*ipv6Mtuinfo)(unsafe.Pointer(&b[0]))
60 if mi.Addr.Scope_id == 0 {
61 return nil, int(mi.Mtu), nil
63 ifi, err := net.InterfaceByIndex(int(mi.Addr.Scope_id))
67 return ifi, int(mi.Mtu), nil
70 func (so *sockOpt) setGroup(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
73 return so.setIPMreq(c, ifi, grp)
75 return so.setGroupReq(c, ifi, grp)
81 func (so *sockOpt) setSourceGroup(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
82 return so.setGroupSourceReq(c, ifi, grp, src)
85 func (so *sockOpt) setBPF(c *socket.Conn, f []bpf.RawInstruction) error {
86 return so.setAttachFilter(c, f)