diff options
| author | Sam Balana <sbalana@google.com> | 2020-11-24 14:20:15 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-11-24 14:22:03 -0800 |
| commit | f90ab60a8a5ce9663a878c7cabcc4ad66922e265 (patch) | |
| tree | 8f1de88305c0f8fdf4cd70a9479adbee42f7ccd8 /pkg/tcpip/stack/neighbor_entry.go | |
| parent | d492b21319676bc9a9f97b9633b3be387c0b60a5 (diff) | |
Track number of packets queued to Failed neighbors
Add a NIC-specific neighbor table statistic so we can determine how many
packets have been queued to Failed neighbors, indicating an unhealthy local
network. This change assists us to debug in-field issues where subsequent
traffic to a neighbor fails.
Fixes #4819
PiperOrigin-RevId: 344131119
Diffstat (limited to 'pkg/tcpip/stack/neighbor_entry.go')
| -rw-r--r-- | pkg/tcpip/stack/neighbor_entry.go | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/pkg/tcpip/stack/neighbor_entry.go b/pkg/tcpip/stack/neighbor_entry.go index 493e48031..65fbd0ac3 100644 --- a/pkg/tcpip/stack/neighbor_entry.go +++ b/pkg/tcpip/stack/neighbor_entry.go @@ -347,9 +347,10 @@ func (e *neighborEntry) handlePacketQueuedLocked(localAddr tcpip.Address) { e.setStateLocked(Delay) e.dispatchChangeEventLocked() - case Incomplete, Reachable, Delay, Probe, Static, Failed: + case Incomplete, Reachable, Delay, Probe, Static: // Do nothing - + case Failed: + e.nic.stats.Neighbor.FailedEntryLookups.Increment() default: panic(fmt.Sprintf("Invalid cache entry state: %s", e.neigh.State)) } |