From 14bb08c1df8db9ec6c8a05520d4eee67971235d9 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Thu, 27 Sep 2018 20:03:23 +0200 Subject: mod tidy --- vendor/golang.org/x/net/ipv6/control.go | 187 -------------------------------- 1 file changed, 187 deletions(-) delete mode 100644 vendor/golang.org/x/net/ipv6/control.go (limited to 'vendor/golang.org/x/net/ipv6/control.go') diff --git a/vendor/golang.org/x/net/ipv6/control.go b/vendor/golang.org/x/net/ipv6/control.go deleted file mode 100644 index 2da6444..0000000 --- a/vendor/golang.org/x/net/ipv6/control.go +++ /dev/null @@ -1,187 +0,0 @@ -// 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. - -package ipv6 - -import ( - "fmt" - "net" - "sync" - - "golang.org/x/net/internal/iana" - "golang.org/x/net/internal/socket" -) - -// Note that RFC 3542 obsoletes RFC 2292 but OS X Snow Leopard and the -// former still support RFC 2292 only. Please be aware that almost -// all protocol implementations prohibit using a combination of RFC -// 2292 and RFC 3542 for some practical reasons. - -type rawOpt struct { - sync.RWMutex - cflags ControlFlags -} - -func (c *rawOpt) set(f ControlFlags) { c.cflags |= f } -func (c *rawOpt) clear(f ControlFlags) { c.cflags &^= f } -func (c *rawOpt) isset(f ControlFlags) bool { return c.cflags&f != 0 } - -// A ControlFlags represents per packet basis IP-level socket option -// control flags. -type ControlFlags uint - -const ( - FlagTrafficClass ControlFlags = 1 << iota // pass the traffic class on the received packet - FlagHopLimit // pass the hop limit on the received packet - FlagSrc // pass the source address on the received packet - FlagDst // pass the destination address on the received packet - FlagInterface // pass the interface index on the received packet - FlagPathMTU // pass the path MTU on the received packet path -) - -const flagPacketInfo = FlagDst | FlagInterface - -// A ControlMessage represents per packet basis IP-level socket -// options. -type ControlMessage struct { - // Receiving socket options: SetControlMessage allows to - // receive the options from the protocol stack using ReadFrom - // method of PacketConn. - // - // Specifying socket options: ControlMessage for WriteTo - // method of PacketConn allows to send the options to the - // protocol stack. - // - TrafficClass int // traffic class, must be 1 <= value <= 255 when specifying - HopLimit int // hop limit, must be 1 <= value <= 255 when specifying - Src net.IP // source address, specifying only - Dst net.IP // destination address, receiving only - IfIndex int // interface index, must be 1 <= value when specifying - NextHop net.IP // next hop address, specifying only - MTU int // path MTU, receiving only -} - -func (cm *ControlMessage) String() string { - if cm == nil { - return "" - } - return fmt.Sprintf("tclass=%#x hoplim=%d src=%v dst=%v ifindex=%d nexthop=%v mtu=%d", cm.TrafficClass, cm.HopLimit, cm.Src, cm.Dst, cm.IfIndex, cm.NextHop, cm.MTU) -} - -// Marshal returns the binary encoding of cm. -func (cm *ControlMessage) Marshal() []byte { - if cm == nil { - return nil - } - var l int - tclass := false - if ctlOpts[ctlTrafficClass].name > 0 && cm.TrafficClass > 0 { - tclass = true - l += socket.ControlMessageSpace(ctlOpts[ctlTrafficClass].length) - } - hoplimit := false - if ctlOpts[ctlHopLimit].name > 0 && cm.HopLimit > 0 { - hoplimit = true - l += socket.ControlMessageSpace(ctlOpts[ctlHopLimit].length) - } - pktinfo := false - if ctlOpts[ctlPacketInfo].name > 0 && (cm.Src.To16() != nil && cm.Src.To4() == nil || cm.IfIndex > 0) { - pktinfo = true - l += socket.ControlMessageSpace(ctlOpts[ctlPacketInfo].length) - } - nexthop := false - if ctlOpts[ctlNextHop].name > 0 && cm.NextHop.To16() != nil && cm.NextHop.To4() == nil { - nexthop = true - l += socket.ControlMessageSpace(ctlOpts[ctlNextHop].length) - } - var b []byte - if l > 0 { - b = make([]byte, l) - bb := b - if tclass { - bb = ctlOpts[ctlTrafficClass].marshal(bb, cm) - } - if hoplimit { - bb = ctlOpts[ctlHopLimit].marshal(bb, cm) - } - if pktinfo { - bb = ctlOpts[ctlPacketInfo].marshal(bb, cm) - } - if nexthop { - bb = ctlOpts[ctlNextHop].marshal(bb, cm) - } - } - return b -} - -// Parse parses b as a control message and stores the result in cm. -func (cm *ControlMessage) Parse(b []byte) error { - ms, err := socket.ControlMessage(b).Parse() - if err != nil { - return err - } - for _, m := range ms { - lvl, typ, l, err := m.ParseHeader() - if err != nil { - return err - } - if lvl != iana.ProtocolIPv6 { - continue - } - switch { - case typ == ctlOpts[ctlTrafficClass].name && l >= ctlOpts[ctlTrafficClass].length: - ctlOpts[ctlTrafficClass].parse(cm, m.Data(l)) - case typ == ctlOpts[ctlHopLimit].name && l >= ctlOpts[ctlHopLimit].length: - ctlOpts[ctlHopLimit].parse(cm, m.Data(l)) - case typ == ctlOpts[ctlPacketInfo].name && l >= ctlOpts[ctlPacketInfo].length: - ctlOpts[ctlPacketInfo].parse(cm, m.Data(l)) - case typ == ctlOpts[ctlPathMTU].name && l >= ctlOpts[ctlPathMTU].length: - ctlOpts[ctlPathMTU].parse(cm, m.Data(l)) - } - } - return nil -} - -// NewControlMessage returns a new control message. -// -// The returned message is large enough for options specified by cf. -func NewControlMessage(cf ControlFlags) []byte { - opt := rawOpt{cflags: cf} - var l int - if opt.isset(FlagTrafficClass) && ctlOpts[ctlTrafficClass].name > 0 { - l += socket.ControlMessageSpace(ctlOpts[ctlTrafficClass].length) - } - if opt.isset(FlagHopLimit) && ctlOpts[ctlHopLimit].name > 0 { - l += socket.ControlMessageSpace(ctlOpts[ctlHopLimit].length) - } - if opt.isset(flagPacketInfo) && ctlOpts[ctlPacketInfo].name > 0 { - l += socket.ControlMessageSpace(ctlOpts[ctlPacketInfo].length) - } - if opt.isset(FlagPathMTU) && ctlOpts[ctlPathMTU].name > 0 { - l += socket.ControlMessageSpace(ctlOpts[ctlPathMTU].length) - } - var b []byte - if l > 0 { - b = make([]byte, l) - } - return b -} - -// Ancillary data socket options -const ( - ctlTrafficClass = iota // header field - ctlHopLimit // header field - ctlPacketInfo // inbound or outbound packet path - ctlNextHop // nexthop - ctlPathMTU // path mtu - ctlMax -) - -// A ctlOpt represents a binding for ancillary data socket option. -type ctlOpt struct { - name int // option name, must be equal or greater than 1 - length int // option length - marshal func([]byte, *ControlMessage) []byte - parse func(*ControlMessage, []byte) -} -- cgit v1.2.3