conntrack: use tcpip.Clock instead of time.Time

- We should be using a monotonic clock
- This will make future testing easier

Updates #6748.

PiperOrigin-RevId: 404072318

1 files changed, 0 insertions, 44 deletions

diff --git a/pkg/tcpip/stack/iptables_state.go b/pkg/tcpip/stack/iptables_state.go
deleted file mode 100644
index 3d3c39c20..000000000
--- a/pkg/tcpip/stack/iptables_state.go
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright 2020 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 stack
-
-import (
-	"time"
-)
-
-// +stateify savable
-type unixTime struct {
-	second int64
-	nano   int64
-}
-
-// saveLastUsed is invoked by stateify.
-func (cn *conn) saveLastUsed() unixTime {
-	cn.mu.Lock()
-	defer cn.mu.Unlock()
-	return unixTime{cn.lastUsed.Unix(), cn.lastUsed.UnixNano()}
-}
-
-// loadLastUsed is invoked by stateify.
-func (cn *conn) loadLastUsed(unix unixTime) {
-	cn.mu.Lock()
-	defer cn.mu.Unlock()
-	cn.lastUsed = time.Unix(unix.second, unix.nano)
-}
-
-// beforeSave is invoked by stateify.
-func (ct *ConnTrack) beforeSave() {
-	ct.mu.Lock()
-}