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