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net/tstun: remove buffer on outbound channel
The buffer is not necessary, I was unable to observe any optimization, and having an unbuffered channel offers potential scheduler optimization. Signed-off-by: James Tucker <james@tailscale.com>
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@ -202,8 +202,7 @@ func wrap(logf logger.Logf, tdev tun.Device, isTAP bool) *Wrapper {
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// a goroutine should not block when setting it, even with no listeners.
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bufferConsumed: make(chan struct{}, 1),
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closed: make(chan struct{}),
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// outbound can be unbuffered; the buffer is an optimization.
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outbound: make(chan tunReadResult, 1),
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outbound: make(chan tunReadResult),
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eventsUpDown: make(chan tun.Event),
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eventsOther: make(chan tun.Event),
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// TODO(dmytro): (highly rate-limited) hexdumps should happen on unknown packets.
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