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Nayana BidariandgVisor bot
2836a4a651
- Adds a new flag which will enable netstack s/r. When the flag is not enabled, there is no change in the existing behavior. The flag will be enabled only in tests to verify the s/r functionality of netstack. - Some additional fields in netstack were causing panic when netstack is save/restored. Such fields are marked as 'save'/'nosave' accordingly to resolve the panic. PiperOrigin-RevId: 668566657
49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
// Copyright 2021 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 netstack
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import (
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"context"
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"time"
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"gvisor.dev/gvisor/pkg/tcpip/stack"
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)
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func (s *sock) saveTimestamp() int64 {
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s.readMu.Lock()
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defer s.readMu.Unlock()
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return s.timestamp.UnixNano()
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}
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func (s *sock) loadTimestamp(_ context.Context, nsec int64) {
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s.readMu.Lock()
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defer s.readMu.Unlock()
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s.timestamp = time.Unix(0, nsec)
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}
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func (s *Stack) saveStack() *stack.Stack {
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if s.shouldSaveRestoreStack {
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return s.Stack
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}
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// Netstack s/r is not enabled. Do not save netstack, during
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// restore a new stack will be configured.
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return nil
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}
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func (s *Stack) loadStack(_ context.Context, st *stack.Stack) {
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s.Stack = st
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}
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