diff options
Diffstat (limited to 'pkg/tcpip/transport/tcp/snd.go')
| -rw-r--r-- | pkg/tcpip/transport/tcp/snd.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/pkg/tcpip/transport/tcp/snd.go b/pkg/tcpip/transport/tcp/snd.go index 72d58dcff..92a66f17e 100644 --- a/pkg/tcpip/transport/tcp/snd.go +++ b/pkg/tcpip/transport/tcp/snd.go @@ -1154,6 +1154,13 @@ func (s *sender) walkSACK(rcvdSeg *segment) { idx := 0 n := len(rcvdSeg.parsedOptions.SACKBlocks) if checkDSACK(rcvdSeg) { + dsackBlock := rcvdSeg.parsedOptions.SACKBlocks[0] + numDSACK := uint64(dsackBlock.End-dsackBlock.Start) / uint64(s.MaxPayloadSize) + // numDSACK can be zero when DSACK is sent for subsegments. + if numDSACK < 1 { + numDSACK = 1 + } + s.ep.stack.Stats().TCP.SegmentsAckedWithDSACK.IncrementBy(numDSACK) s.rc.setDSACKSeen(true) idx = 1 n-- |