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// 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)
}
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