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wgengine/magicsock: add more DERP home clientmetrics
Updates tailscale/corp#18095 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I423adca2de0730092394bb5fd5796cd35557d352
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@ -135,6 +135,7 @@ func (c *Conn) pickDERPFallback() int {
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return pickDERPFallbackForTests()
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}
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metricDERPHomeFallback.Add(1)
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return ids[rands.IntN(uint64(uintptr(unsafe.Pointer(c))), len(ids))]
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}
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@ -173,6 +174,7 @@ func (c *Conn) maybeSetNearestDERP(report *netcheck.Report) (preferredDERP int)
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myDerp := c.myDerp
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c.mu.Unlock()
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if myDerp != 0 {
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metricDERPHomeNoChangeNoControl.Add(1)
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return myDerp
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}
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@ -948,6 +950,7 @@ func (c *Conn) cleanStaleDerp() {
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}
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if ad.lastWrite.Before(tooOld) {
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c.closeDerpLocked(i, "idle")
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metricDERPStaleCleaned.Add(1)
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dirty = true
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} else {
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someNonHomeOpen = true
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@ -3028,6 +3028,17 @@ type discoInfo struct {
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// changed from non-zero to a different non-zero.
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metricDERPHomeChange = clientmetric.NewCounter("derp_home_change")
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// metricDERPHomeNoChangeNoControl is how many times our DERP home
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// region did not change because we didn't have an active connection to
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// the control server.
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metricDERPHomeNoChangeNoControl = clientmetric.NewCounter("derp_home_no_change_no_control")
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// metricDERPHomeFallback is how many times we picked a DERP fallback.
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metricDERPHomeFallback = clientmetric.NewCounter("derp_home_fallback")
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// metricDERPStaleCleaned is how many times we closed a stale DERP connection.
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metricDERPStaleCleaned = clientmetric.NewCounter("derp_stale_cleaned")
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// Disco packets received bpf read path
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//lint:ignore U1000 used on Linux only
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metricRecvDiscoPacketIPv4 = clientmetric.NewCounter("magicsock_disco_recv_bpf_ipv4")
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