| // 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 aix darwin dragonfly freebsd linux netbsd openbsd solaris windows |
| |
| package ipv6 |
| |
| import ( |
| "net" |
| "runtime" |
| "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, errNotImplemented |
| } |
| 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, errNotImplemented |
| } |
| mi := (*ipv6Mtuinfo)(unsafe.Pointer(&b[0])) |
| if mi.Addr.Scope_id == 0 || runtime.GOOS == "aix" { |
| // AIX kernel might return a wrong address. |
| 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 errNotImplemented |
| } |
| } |
| |
| 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) |
| } |