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Record counts of packets with unknown L3/L4 numbers

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Previously, we recorded a single aggregated count. These per-protocol counts
can help us debug field issues when frames are dropped for this reason.

PiperOrigin-RevId: 405913911
This commit is contained in:
Nick Brown
2021-10-27 10:06:55 -07:00
committed by gVisor bot
parent 7b8f19dc76
commit 22a6a37079
9 changed files with 243 additions and 40 deletions
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pkg/sentry/socket/netstack/netstack.go
+1 -3
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@@ -81,9 +81,7 @@ func mustCreateGauge(name, description string) *tcpip.StatCounter {
var Metrics = tcpip.Stats{
DroppedPackets: mustCreateMetric("/netstack/dropped_packets", "Number of packets dropped at the transport layer."),
NICs: tcpip.NICStats{
UnknownL3ProtocolRcvdPackets: mustCreateMetric("/netstack/nic/unknown_l3_protocol_received_packets", "Number of packets received that were for an unknown or unsupported L3 protocol."),
UnknownL4ProtocolRcvdPackets: mustCreateMetric("/netstack/nic/unknown_l4_protocol_received_packets", "Number of packets received that were for an unknown or unsupported L4 protocol."),
MalformedL4RcvdPackets: mustCreateMetric("/netstack/nic/malformed_l4_received_packets", "Number of packets received that failed L4 header parsing."),
MalformedL4RcvdPackets: mustCreateMetric("/netstack/nic/malformed_l4_received_packets", "Number of packets received that failed L4 header parsing."),
Tx: tcpip.NICPacketStats{
Packets: mustCreateMetric("/netstack/nic/tx/packets", "Number of packets transmitted."),
Bytes: mustCreateMetric("/netstack/nic/tx/bytes", "Number of bytes transmitted."),