88 lines
2.1 KiB
Go
88 lines
2.1 KiB
Go
|
// Copyright 2013 The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
// +build darwin dragonfly freebsd linux netbsd openbsd solaris windows
|
||
|
|
|
||
|
|
package ipv6
|
||
|
|
|
||
|
|
import (
|
||
|
|
"net"
|
||
|
|
"unsafe"
|
||
|
|
|
||
|
|
"golang.org/x/net/bpf"
|
||
|
|
"golang.org/x/net/internal/socket"
|
||
|
|
)
|
||
|
|
|
||
|
|
func (so *sockOpt) getMulticastInterface(c *socket.Conn) (*net.Interface, error) {
|
||
|
|
n, err := so.GetInt(c)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
return net.InterfaceByIndex(n)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (so *sockOpt) setMulticastInterface(c *socket.Conn, ifi *net.Interface) error {
|
||
|
|
var n int
|
||
|
|
if ifi != nil {
|
||
|
|
n = ifi.Index
|
||
|
|
}
|
||
|
|
return so.SetInt(c, n)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (so *sockOpt) getICMPFilter(c *socket.Conn) (*ICMPFilter, error) {
|
||
|
|
b := make([]byte, so.Len)
|
||
|
|
n, err := so.Get(c, b)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
if n != sizeofICMPv6Filter {
|
||
|
|
return nil, errOpNoSupport
|
||
|
|
}
|
||
|
|
return (*ICMPFilter)(unsafe.Pointer(&b[0])), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (so *sockOpt) setICMPFilter(c *socket.Conn, f *ICMPFilter) error {
|
||
|
|
b := (*[sizeofICMPv6Filter]byte)(unsafe.Pointer(f))[:sizeofICMPv6Filter]
|
||
|
|
return so.Set(c, b)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (so *sockOpt) getMTUInfo(c *socket.Conn) (*net.Interface, int, error) {
|
||
|
|
b := make([]byte, so.Len)
|
||
|
|
n, err := so.Get(c, b)
|
||
|
|
if err != nil {
|
||
|
|
return nil, 0, err
|
||
|
|
}
|
||
|
|
if n != sizeofIPv6Mtuinfo {
|
||
|
|
return nil, 0, errOpNoSupport
|
||
|
|
}
|
||
|
|
mi := (*ipv6Mtuinfo)(unsafe.Pointer(&b[0]))
|
||
|
|
if mi.Addr.Scope_id == 0 {
|
||
|
|
return nil, int(mi.Mtu), nil
|
||
|
|
}
|
||
|
|
ifi, err := net.InterfaceByIndex(int(mi.Addr.Scope_id))
|
||
|
|
if err != nil {
|
||
|
|
return nil, 0, err
|
||
|
|
}
|
||
|
|
return ifi, int(mi.Mtu), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (so *sockOpt) setGroup(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
|
||
|
|
switch so.typ {
|
||
|
|
case ssoTypeIPMreq:
|
||
|
|
return so.setIPMreq(c, ifi, grp)
|
||
|
|
case ssoTypeGroupReq:
|
||
|
|
return so.setGroupReq(c, ifi, grp)
|
||
|
|
default:
|
||
|
|
return errOpNoSupport
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (so *sockOpt) setSourceGroup(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
|
||
|
|
return so.setGroupSourceReq(c, ifi, grp, src)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (so *sockOpt) setBPF(c *socket.Conn, f []bpf.RawInstruction) error {
|
||
|
|
return so.setAttachFilter(c, f)
|
||
|
|
}
|