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| author | Nayana Bidari <nybidari@google.com> | 2021-07-21 18:03:48 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-07-21 18:06:31 -0700 |
| commit | f1f746dddcc0eb97c04b7d4a521962edb30cbea8 (patch) | |
| tree | 2bced1f23f07f657611f3a690a5a0fdd7562c13c /pkg/sentry/socket | |
| parent | bc0ab8ea0f2035ac143a5285f09839882e866705 (diff) | |
Add metric to count number of segments acknowledged by DSACK.
- Creates new metric "/tcp/segments_acked_with_dsack" to count the number of
segments acked with DSACK.
- Added check to verify the metric is getting incremented when a DSACK is sent
in the unit tests.
PiperOrigin-RevId: 386135949
Diffstat (limited to 'pkg/sentry/socket')
| -rw-r--r-- | pkg/sentry/socket/netstack/netstack.go | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pkg/sentry/socket/netstack/netstack.go b/pkg/sentry/socket/netstack/netstack.go index 0f8cbe7e2..9b844b0c0 100644 --- a/pkg/sentry/socket/netstack/netstack.go +++ b/pkg/sentry/socket/netstack/netstack.go @@ -274,6 +274,7 @@ var Metrics = tcpip.Stats{ Timeouts: mustCreateMetric("/netstack/tcp/timeouts", "Number of times RTO expired."), ChecksumErrors: mustCreateMetric("/netstack/tcp/checksum_errors", "Number of segments dropped due to bad checksums."), FailedPortReservations: mustCreateMetric("/netstack/tcp/failed_port_reservations", "Number of time TCP failed to reserve a port."), + SegmentsAckedWithDSACK: mustCreateMetric("/netstack/tcp/segments_acked_with_dsack", "Number of segments for which DSACK was received."), }, UDP: tcpip.UDPStats{ PacketsReceived: mustCreateMetric("/netstack/udp/packets_received", "Number of UDP datagrams received via HandlePacket."), |