netstack: tcp socket connected state S/R support.

PiperOrigin-RevId: 203958972
Change-Id: Ia6fe16547539296d48e2c6731edacdd96bd6e93c

1 files changed, 49 insertions, 0 deletions

diff --git a/pkg/tcpip/transport/tcp/snd_state.go b/pkg/tcpip/transport/tcp/snd_state.go
new file mode 100644
index 000000000..33c8867f4
--- /dev/null
+++ b/pkg/tcpip/transport/tcp/snd_state.go
@@ -0,0 +1,49 @@
+// Copyright 2018 Google Inc.
+//
+// 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 tcp
+
+import (
+	"time"
+)
+
+type unixTime struct {
+	second int64
+	nano   int64
+}
+
+// saveLastSendTime is invoked by stateify.
+func (s *sender) saveLastSendTime() unixTime {
+	return unixTime{s.lastSendTime.Unix(), s.lastSendTime.UnixNano()}
+}
+
+// loadLastSendTime is invoked by stateify.
+func (s *sender) loadLastSendTime(unix unixTime) {
+	s.lastSendTime = time.Unix(unix.second, unix.nano)
+}
+
+// saveRttMeasureTime is invoked by stateify.
+func (s *sender) saveRttMeasureTime() unixTime {
+	return unixTime{s.rttMeasureTime.Unix(), s.rttMeasureTime.UnixNano()}
+}
+
+// loadRttMeasureTime is invoked by stateify.
+func (s *sender) loadRttMeasureTime(unix unixTime) {
+	s.rttMeasureTime = time.Unix(unix.second, unix.nano)
+}
+
+// afterLoad is invoked by stateify.
+func (s *sender) afterLoad() {
+	s.resendTimer.init(&s.resendWaker)
+}