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Add counters for dropped neighbor advertisements

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Add counters for when neighbor advertisements are ignored, either because they
don't correspond to a known neighbor cache entry or because they contain an
unexpected source address.

Fixes #8053

PiperOrigin-RevId: 479428582
This commit is contained in:
Alex Konradi
2022-10-06 15:36:32 -07:00
committed by gVisor bot
parent c174470a2d
commit 5c9476aa87
6 changed files with 91 additions and 12 deletions
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pkg/sentry/socket/netstack/netstack.go
+3 -1
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@@ -97,7 +97,9 @@ var Metrics = tcpip.Stats{
Bytes: mustCreateMetric("/netstack/nic/disabled_rx/bytes", "Number of bytes received on disabled NICs."),
},
Neighbor: tcpip.NICNeighborStats{
UnreachableEntryLookups: mustCreateMetric("/netstack/nic/neighbor/unreachable_entry_loopups", "Number of lookups performed on a neighbor entry in Unreachable state."),
UnreachableEntryLookups: mustCreateMetric("/netstack/nic/neighbor/unreachable_entry_loopups", "Number of lookups performed on a neighbor entry in Unreachable state."),
DroppedConfirmationForNoninitiatedNeighbor: mustCreateMetric("/netstack/nic/neighbor/dropped_confirmation_for_noninitiated_neighbor", "Number of advertisements received that don't match an entry in the neighbor cache."),
DroppedInvalidLinkAddressConfirmations: mustCreateMetric("/netstack/nic/neighbor/dropped_invalid_link_address_confirmations", "Number of advertisements dropped because they have empty source link-layer addresses"),
},
},
ICMP: tcpip.ICMPStats{