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all: use atomic.Pointer

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Also add some missing docs.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali
2022-08-03 21:31:40 -07:00
committed by Maisem Ali
parent 5381437664
commit 9bb5a038e5
9 changed files with 21 additions and 24 deletions
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11
net/tstun/wrap.go
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@@ -126,7 +126,7 @@ type Wrapper struct {
eventsOther chan tun.Event
// filter atomically stores the currently active packet filter
filter atomic.Value // of *filter.Filter
filter atomic.Pointer[filter.Filter]
// filterFlags control the verbosity of logging packet drops/accepts.
filterFlags filter.RunFlags
@@ -477,8 +477,7 @@ func (t *Wrapper) filterOut(p *packet.Parsed) filter.Response {
}
}
filt, _ := t.filter.Load().(*filter.Filter)
filt := t.filter.Load()
if filt == nil {
return filter.Drop
}
@@ -606,8 +605,7 @@ func (t *Wrapper) filterIn(buf []byte) filter.Response {
}
}
filt, _ := t.filter.Load().(*filter.Filter)
filt := t.filter.Load()
if filt == nil {
return filter.Drop
}
@@ -698,8 +696,7 @@ func (t *Wrapper) tdevWrite(buf []byte, offset int) (int, error) {
}
func (t *Wrapper) GetFilter() *filter.Filter {
filt, _ := t.filter.Load().(*filter.Filter)
return filt
return t.filter.Load()
}
func (t *Wrapper) SetFilter(filt *filter.Filter) {