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net/tstun, wgengine/magicsock: enable vectorized I/O on Linux (#6663)

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This commit updates the wireguard-go dependency and implements the
necessary changes to the tun.Device and conn.Bind implementations to
support passing vectors of packets in tailscaled. This significantly
improves throughput performance on Linux.

Updates #414

Signed-off-by: Jordan Whited <jordan@tailscale.com>
Signed-off-by: James Tucker <james@tailscale.com>
Co-authored-by: James Tucker <james@tailscale.com>
This commit is contained in:
Jordan Whited
2022-12-08 17:58:14 -08:00
committed by GitHub
parent 389238fe4a
commit 76389d8baf
14 changed files with 777 additions and 298 deletions
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15
net/tstun/fake.go
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@@ -34,21 +34,22 @@ func (t *fakeTUN) Close() error {
return nil
}
func (t *fakeTUN) Read(out []byte, offset int) (int, error) {
func (t *fakeTUN) Read(out [][]byte, sizes []int, offset int) (int, error) {
<-t.closechan
return 0, io.EOF
}
func (t *fakeTUN) Write(b []byte, n int) (int, error) {
func (t *fakeTUN) Write(b [][]byte, n int) (int, error) {
select {
case <-t.closechan:
return 0, ErrClosed
default:
}
return len(b), nil
return 1, nil
}
func (t *fakeTUN) Flush() error { return nil }
func (t *fakeTUN) MTU() (int, error) { return 1500, nil }
func (t *fakeTUN) Name() (string, error) { return "FakeTUN", nil }
func (t *fakeTUN) Events() chan tun.Event { return t.evchan }
func (t *fakeTUN) Flush() error { return nil }
func (t *fakeTUN) MTU() (int, error) { return 1500, nil }
func (t *fakeTUN) Name() (string, error) { return "FakeTUN", nil }
func (t *fakeTUN) Events() <-chan tun.Event { return t.evchan }
func (t *fakeTUN) BatchSize() int { return 1 }