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wgengine: don't lose filter state on filter reconfig.

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We were abandoning the UDP port LRU every time we got a new packet
filter from tailcontrol, which caused return packets to suddenly stop
arriving.
This commit is contained in:
Avery Pennarun
2020-03-25 03:47:55 -04:00
parent 4336de0d98
commit f53e78e0d5
6 changed files with 46 additions and 15 deletions
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5
wgengine/watchdog.go
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@@ -63,6 +63,11 @@ func (e *watchdogEngine) watchdog(name string, fn func()) {
func (e *watchdogEngine) Reconfig(cfg *wgcfg.Config, dnsDomains []string) error {
return e.watchdogErr("Reconfig", func() error { return e.wrap.Reconfig(cfg, dnsDomains) })
}
func (e *watchdogEngine) GetFilter() *filter.Filter {
var x *filter.Filter
e.watchdog("GetFilter", func() { x = e.wrap.GetFilter() })
return x
}
func (e *watchdogEngine) SetFilter(filt *filter.Filter) {
e.watchdog("SetFilter", func() { e.wrap.SetFilter(filt) })
}