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| author | Zeling Feng <zeling@google.com> | 2020-05-08 11:21:40 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-05-08 11:23:24 -0700 |
| commit | 5d7d5ed7d6ffd8d420f042a22b22e0527e78d441 (patch) | |
| tree | bf9a6eb8cdbb7411a195440b9c6bd665b0328dd9 /pkg/tcpip/header/tcp.go | |
| parent | c59e7b832c1fb099650da18f77ea1ccdbc6b2d96 (diff) | |
Send ACK to OTW SEQs/unacc ACKs in CLOSE_WAIT
This fixed the corresponding packetimpact test.
PiperOrigin-RevId: 310593470
Diffstat (limited to 'pkg/tcpip/header/tcp.go')
| -rw-r--r-- | pkg/tcpip/header/tcp.go | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/pkg/tcpip/header/tcp.go b/pkg/tcpip/header/tcp.go index 21581257b..29454c4b9 100644 --- a/pkg/tcpip/header/tcp.go +++ b/pkg/tcpip/header/tcp.go @@ -609,5 +609,8 @@ func Acceptable(segSeq seqnum.Value, segLen seqnum.Size, rcvNxt, rcvAcc seqnum.V } // Page 70 of RFC 793 allows packets that can be made "acceptable" by trimming // the payload, so we'll accept any payload that overlaps the receieve window. - return rcvNxt.LessThan(segSeq.Add(segLen)) && segSeq.LessThan(rcvAcc) + // segSeq < rcvAcc is more correct according to RFC, however, Linux does it + // differently, it uses segSeq <= rcvAcc, we'd want to keep the same behavior + // as Linux. + return rcvNxt.LessThan(segSeq.Add(segLen)) && segSeq.LessThanEq(rcvAcc) } |