1 files changed, 0 insertions, 113 deletions
diff --git a/pkg/flipcall/io.go b/pkg/flipcall/io.go
deleted file mode 100644
index 85e40b932..000000000
--- a/pkg/flipcall/io.go
+++ /dev/null
@@ -1,113 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package flipcall
-
-import (
-	"fmt"
-	"io"
-)
-
-// DatagramReader implements io.Reader by reading a datagram from an Endpoint's
-// packet window. Its use is optional; users that can use Endpoint.Data() more
-// efficiently are advised to do so.
-type DatagramReader struct {
-	ep  *Endpoint
-	off uint32
-	end uint32
-}
-
-// Init must be called on zero-value DatagramReaders before first use.
-//
-// Preconditions: dataLen is 0, or was returned by a previous call to
-// ep.RecvFirst() or ep.SendRecv().
-func (r *DatagramReader) Init(ep *Endpoint, dataLen uint32) {
-	r.ep = ep
-	r.Reset(dataLen)
-}
-
-// Reset causes r to begin reading a new datagram of the given length from the
-// associated Endpoint.
-//
-// Preconditions: dataLen is 0, or was returned by a previous call to the
-// associated Endpoint's RecvFirst() or SendRecv() methods.
-func (r *DatagramReader) Reset(dataLen uint32) {
-	if dataLen > r.ep.dataCap {
-		panic(fmt.Sprintf("invalid dataLen (%d) > ep.dataCap (%d)", dataLen, r.ep.dataCap))
-	}
-	r.off = 0
-	r.end = dataLen
-}
-
-// NewReader is a convenience function that returns an initialized
-// DatagramReader allocated on the heap.
-//
-// Preconditions: dataLen was returned by a previous call to ep.RecvFirst() or
-// ep.SendRecv().
-func (ep *Endpoint) NewReader(dataLen uint32) *DatagramReader {
-	r := &DatagramReader{}
-	r.Init(ep, dataLen)
-	return r
-}
-
-// Read implements io.Reader.Read.
-func (r *DatagramReader) Read(dst []byte) (int, error) {
-	n := copy(dst, r.ep.Data()[r.off:r.end])
-	r.off += uint32(n)
-	if r.off == r.end {
-		return n, io.EOF
-	}
-	return n, nil
-}
-
-// DatagramWriter implements io.Writer by writing a datagram to an Endpoint's
-// packet window. Its use is optional; users that can use Endpoint.Data() more
-// efficiently are advised to do so.
-type DatagramWriter struct {
-	ep  *Endpoint
-	off uint32
-}
-
-// Init must be called on zero-value DatagramWriters before first use.
-func (w *DatagramWriter) Init(ep *Endpoint) {
-	w.ep = ep
-}
-
-// Reset causes w to begin writing a new datagram to the associated Endpoint.
-func (w *DatagramWriter) Reset() {
-	w.off = 0
-}
-
-// NewWriter is a convenience function that returns an initialized
-// DatagramWriter allocated on the heap.
-func (ep *Endpoint) NewWriter() *DatagramWriter {
-	w := &DatagramWriter{}
-	w.Init(ep)
-	return w
-}
-
-// Write implements io.Writer.Write.
-func (w *DatagramWriter) Write(src []byte) (int, error) {
-	n := copy(w.ep.Data()[w.off:w.ep.dataCap], src)
-	w.off += uint32(n)
-	if n != len(src) {
-		return n, fmt.Errorf("datagram would exceed maximum size of %d bytes", w.ep.dataCap)
-	}
-	return n, nil
-}
-
-// Len returns the length of the written datagram.
-func (w *DatagramWriter) Len() uint32 {
-	return w.off
-}