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-rw-r--r--pkg/tcpip/transport/tcp/segment.go6
-rw-r--r--pkg/tcpip/transport/tcp/snd.go3
2 files changed, 5 insertions, 4 deletions
diff --git a/pkg/tcpip/transport/tcp/segment.go b/pkg/tcpip/transport/tcp/segment.go
index 1c10da5ca..5d0bc4f72 100644
--- a/pkg/tcpip/transport/tcp/segment.go
+++ b/pkg/tcpip/transport/tcp/segment.go
@@ -56,9 +56,9 @@ type segment struct {
options []byte `state:".([]byte)"`
hasNewSACKInfo bool
rcvdTime time.Time `state:".(unixTime)"`
- // xmitTime is the last transmit time of this segment. A zero value
- // indicates that the segment has yet to be transmitted.
- xmitTime time.Time `state:".(unixTime)"`
+ // xmitTime is the last transmit time of this segment.
+ xmitTime time.Time `state:".(unixTime)"`
+ xmitCount uint32
}
func newSegment(r *stack.Route, id stack.TransportEndpointID, pkt tcpip.PacketBuffer) *segment {
diff --git a/pkg/tcpip/transport/tcp/snd.go b/pkg/tcpip/transport/tcp/snd.go
index b74b61e7d..657c3146e 100644
--- a/pkg/tcpip/transport/tcp/snd.go
+++ b/pkg/tcpip/transport/tcp/snd.go
@@ -1229,7 +1229,7 @@ func (s *sender) handleRcvdSegment(seg *segment) {
// sendSegment sends the specified segment.
func (s *sender) sendSegment(seg *segment) *tcpip.Error {
- if !seg.xmitTime.IsZero() {
+ if seg.xmitCount > 0 {
s.ep.stack.Stats().TCP.Retransmits.Increment()
s.ep.stats.SendErrors.Retransmits.Increment()
if s.sndCwnd < s.sndSsthresh {
@@ -1237,6 +1237,7 @@ func (s *sender) sendSegment(seg *segment) *tcpip.Error {
}
}
seg.xmitTime = time.Now()
+ seg.xmitCount++
return s.sendSegmentFromView(seg.data, seg.flags, seg.sequenceNumber)
}