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/ipv4/control.go | 144 -------------------------------- 1 file changed, 144 deletions(-) delete mode 100644 vendor/golang.org/x/net/ipv4/control.go (limited to 'vendor/golang.org/x/net/ipv4/control.go') diff --git a/vendor/golang.org/x/net/ipv4/control.go b/vendor/golang.org/x/net/ipv4/control.go deleted file mode 100644 index a2b02ca..0000000 --- a/vendor/golang.org/x/net/ipv4/control.go +++ /dev/null @@ -1,144 +0,0 @@ -// Copyright 2012 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 ipv4 - -import ( - "fmt" - "net" - "sync" - - "golang.org/x/net/internal/iana" - "golang.org/x/net/internal/socket" -) - -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 } - -type ControlFlags uint - -const ( - FlagTTL ControlFlags = 1 << iota // pass the TTL 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 -) - -// 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 or RawConn. - // - // Specifying socket options: ControlMessage for WriteTo - // method of PacketConn or RawConn allows to send the options - // to the protocol stack. - // - TTL int // time-to-live, receiving only - Src net.IP // source address, specifying only - Dst net.IP // destination address, receiving only - IfIndex int // interface index, must be 1 <= value when specifying -} - -func (cm *ControlMessage) String() string { - if cm == nil { - return "" - } - return fmt.Sprintf("ttl=%d src=%v dst=%v ifindex=%d", cm.TTL, cm.Src, cm.Dst, cm.IfIndex) -} - -// Marshal returns the binary encoding of cm. -func (cm *ControlMessage) Marshal() []byte { - if cm == nil { - return nil - } - var m socket.ControlMessage - if ctlOpts[ctlPacketInfo].name > 0 && (cm.Src.To4() != nil || cm.IfIndex > 0) { - m = socket.NewControlMessage([]int{ctlOpts[ctlPacketInfo].length}) - } - if len(m) > 0 { - ctlOpts[ctlPacketInfo].marshal(m, cm) - } - return m -} - -// 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.ProtocolIP { - continue - } - switch { - case typ == ctlOpts[ctlTTL].name && l >= ctlOpts[ctlTTL].length: - ctlOpts[ctlTTL].parse(cm, m.Data(l)) - case typ == ctlOpts[ctlDst].name && l >= ctlOpts[ctlDst].length: - ctlOpts[ctlDst].parse(cm, m.Data(l)) - case typ == ctlOpts[ctlInterface].name && l >= ctlOpts[ctlInterface].length: - ctlOpts[ctlInterface].parse(cm, m.Data(l)) - case typ == ctlOpts[ctlPacketInfo].name && l >= ctlOpts[ctlPacketInfo].length: - ctlOpts[ctlPacketInfo].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(FlagTTL) && ctlOpts[ctlTTL].name > 0 { - l += socket.ControlMessageSpace(ctlOpts[ctlTTL].length) - } - if ctlOpts[ctlPacketInfo].name > 0 { - if opt.isset(FlagSrc | FlagDst | FlagInterface) { - l += socket.ControlMessageSpace(ctlOpts[ctlPacketInfo].length) - } - } else { - if opt.isset(FlagDst) && ctlOpts[ctlDst].name > 0 { - l += socket.ControlMessageSpace(ctlOpts[ctlDst].length) - } - if opt.isset(FlagInterface) && ctlOpts[ctlInterface].name > 0 { - l += socket.ControlMessageSpace(ctlOpts[ctlInterface].length) - } - } - var b []byte - if l > 0 { - b = make([]byte, l) - } - return b -} - -// Ancillary data socket options -const ( - ctlTTL = iota // header field - ctlSrc // header field - ctlDst // header field - ctlInterface // inbound or outbound interface - ctlPacketInfo // inbound or outbound packet path - 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