167 lines
4.7 KiB
Go
167 lines
4.7 KiB
Go
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package inet
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import (
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"bytes"
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"fmt"
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"gvisor.dev/gvisor/pkg/tcpip"
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"gvisor.dev/gvisor/pkg/tcpip/stack"
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)
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// TestStack is a dummy implementation of Stack for tests.
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type TestStack struct {
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InterfacesMap map[int32]Interface
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InterfaceAddrsMap map[int32][]InterfaceAddr
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RouteList []Route
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SupportsIPv6Flag bool
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TCPRecvBufSize TCPBufferSize
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TCPSendBufSize TCPBufferSize
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TCPSACKFlag bool
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Recovery TCPLossRecovery
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IPForwarding bool
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}
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// NewTestStack returns a TestStack with no network interfaces. The value of
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// all other options is unspecified; tests that rely on specific values must
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// set them explicitly.
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func NewTestStack() *TestStack {
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return &TestStack{
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InterfacesMap: make(map[int32]Interface),
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InterfaceAddrsMap: make(map[int32][]InterfaceAddr),
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}
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}
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// Interfaces implements Stack.Interfaces.
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func (s *TestStack) Interfaces() map[int32]Interface {
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return s.InterfacesMap
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}
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// InterfaceAddrs implements Stack.InterfaceAddrs.
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func (s *TestStack) InterfaceAddrs() map[int32][]InterfaceAddr {
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return s.InterfaceAddrsMap
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}
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// AddInterfaceAddr implements Stack.AddInterfaceAddr.
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func (s *TestStack) AddInterfaceAddr(idx int32, addr InterfaceAddr) error {
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s.InterfaceAddrsMap[idx] = append(s.InterfaceAddrsMap[idx], addr)
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return nil
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}
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// RemoveInterfaceAddr implements Stack.RemoveInterfaceAddr.
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func (s *TestStack) RemoveInterfaceAddr(idx int32, addr InterfaceAddr) error {
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interfaceAddrs, ok := s.InterfaceAddrsMap[idx]
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if !ok {
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return fmt.Errorf("unknown idx: %d", idx)
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}
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var filteredAddrs []InterfaceAddr
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for _, interfaceAddr := range interfaceAddrs {
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if !bytes.Equal(interfaceAddr.Addr, addr.Addr) {
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filteredAddrs = append(filteredAddrs, addr)
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}
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}
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s.InterfaceAddrsMap[idx] = filteredAddrs
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return nil
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}
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// SupportsIPv6 implements Stack.SupportsIPv6.
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func (s *TestStack) SupportsIPv6() bool {
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return s.SupportsIPv6Flag
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}
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// TCPReceiveBufferSize implements Stack.TCPReceiveBufferSize.
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func (s *TestStack) TCPReceiveBufferSize() (TCPBufferSize, error) {
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return s.TCPRecvBufSize, nil
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}
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// SetTCPReceiveBufferSize implements Stack.SetTCPReceiveBufferSize.
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func (s *TestStack) SetTCPReceiveBufferSize(size TCPBufferSize) error {
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s.TCPRecvBufSize = size
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return nil
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}
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// TCPSendBufferSize implements Stack.TCPSendBufferSize.
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func (s *TestStack) TCPSendBufferSize() (TCPBufferSize, error) {
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return s.TCPSendBufSize, nil
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}
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// SetTCPSendBufferSize implements Stack.SetTCPSendBufferSize.
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func (s *TestStack) SetTCPSendBufferSize(size TCPBufferSize) error {
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s.TCPSendBufSize = size
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return nil
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}
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// TCPSACKEnabled implements Stack.TCPSACKEnabled.
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func (s *TestStack) TCPSACKEnabled() (bool, error) {
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return s.TCPSACKFlag, nil
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}
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// SetTCPSACKEnabled implements Stack.SetTCPSACKEnabled.
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func (s *TestStack) SetTCPSACKEnabled(enabled bool) error {
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s.TCPSACKFlag = enabled
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return nil
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}
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// TCPRecovery implements Stack.TCPRecovery.
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func (s *TestStack) TCPRecovery() (TCPLossRecovery, error) {
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return s.Recovery, nil
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}
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// SetTCPRecovery implements Stack.SetTCPRecovery.
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func (s *TestStack) SetTCPRecovery(recovery TCPLossRecovery) error {
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s.Recovery = recovery
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return nil
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}
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// Statistics implements inet.Stack.Statistics.
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func (s *TestStack) Statistics(stat interface{}, arg string) error {
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return nil
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}
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// RouteTable implements Stack.RouteTable.
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func (s *TestStack) RouteTable() []Route {
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return s.RouteList
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}
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// Resume implements Stack.Resume.
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func (s *TestStack) Resume() {}
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// RegisteredEndpoints implements inet.Stack.RegisteredEndpoints.
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func (s *TestStack) RegisteredEndpoints() []stack.TransportEndpoint {
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return nil
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}
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// CleanupEndpoints implements inet.Stack.CleanupEndpoints.
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func (s *TestStack) CleanupEndpoints() []stack.TransportEndpoint {
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return nil
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}
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// RestoreCleanupEndpoints implements inet.Stack.RestoreCleanupEndpoints.
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func (s *TestStack) RestoreCleanupEndpoints([]stack.TransportEndpoint) {}
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// Forwarding implements inet.Stack.Forwarding.
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func (s *TestStack) Forwarding(protocol tcpip.NetworkProtocolNumber) bool {
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return s.IPForwarding
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}
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// SetForwarding implements inet.Stack.SetForwarding.
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func (s *TestStack) SetForwarding(protocol tcpip.NetworkProtocolNumber, enable bool) error {
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s.IPForwarding = enable
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return nil
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}
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