1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
// Copyright 2018 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 icmp
import (
"fmt"
"time"
"gvisor.dev/gvisor/pkg/tcpip"
"gvisor.dev/gvisor/pkg/tcpip/stack"
"gvisor.dev/gvisor/pkg/tcpip/transport"
)
// saveReceivedAt is invoked by stateify.
func (p *icmpPacket) saveReceivedAt() int64 {
return p.receivedAt.UnixNano()
}
// loadReceivedAt is invoked by stateify.
func (p *icmpPacket) loadReceivedAt(nsec int64) {
p.receivedAt = time.Unix(0, nsec)
}
// afterLoad is invoked by stateify.
func (e *endpoint) afterLoad() {
stack.StackFromEnv.RegisterRestoredEndpoint(e)
}
// beforeSave is invoked by stateify.
func (e *endpoint) beforeSave() {
e.freeze()
}
// Resume implements tcpip.ResumableEndpoint.Resume.
func (e *endpoint) Resume(s *stack.Stack) {
e.thaw()
e.net.Resume(s)
e.stack = s
e.ops.InitHandler(e, e.stack, tcpip.GetStackSendBufferLimits, tcpip.GetStackReceiveBufferLimits)
switch state := e.net.State(); state {
case transport.DatagramEndpointStateInitial, transport.DatagramEndpointStateClosed:
case transport.DatagramEndpointStateBound, transport.DatagramEndpointStateConnected:
var err tcpip.Error
info := e.net.Info()
info.ID.LocalPort = e.ident
info.ID, err = e.registerWithStack(info.NetProto, info.ID)
if err != nil {
panic(fmt.Sprintf("e.registerWithStack(%d, %#v): %s", info.NetProto, info.ID, err))
}
e.ident = info.ID.LocalPort
default:
panic(fmt.Sprintf("unhandled state = %s", state))
}
}
|
