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udp_linux: wrap socket operations with syscall.RawConn for clean teardown (#1654)
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Browse Source 
remove runtime.LockOSThread() because it makes things worse now

remove the "custom" Write() method from tun_linux.go, the stdlib path via os.File performs better

We should change our guidance around number of routines, ~2 per thread (that you wish to use for Nebula) seems to be about right now
This commit is contained in:
Jack Doan
2026-04-14 18:25:24 -05:00
committed by GitHub
parent 3fae693c42
commit b3194236aa
3 changed files with 162 additions and 188 deletions
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23
overlay/tun_linux.go
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@@ -261,29 +261,6 @@ func (t *tun) RoutesFor(ip netip.Addr) routing.Gateways {
return r
}
func (t *tun) Write(b []byte) (int, error) {
var nn int
maximum := len(b)
for {
n, err := unix.Write(t.fd, b[nn:maximum])
if n > 0 {
nn += n
}
if nn == len(b) {
return nn, err
}
if err != nil {
return nn, err
}
if n == 0 {
return nn, io.ErrUnexpectedEOF
}
}
}
func (t *tun) deviceBytes() (o [16]byte) {
for i, c := range t.Device {
o[i] = byte(c)