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wireguard-go-awg2-lx/device
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Alexander Yastrebov 19f7e29805 device: reduce RoutineHandshake allocations 
Reduce allocations by eliminating byte reader, hand-rolled decoding and
reusing message structs.

Synthetic benchmark:

    var msgSink MessageInitiation
    func BenchmarkMessageInitiationUnmarshal(b *testing.B) {
        packet := make([]byte, MessageInitiationSize)
        reader := bytes.NewReader(packet)
        err := binary.Read(reader, binary.LittleEndian, &msgSink)
        if err != nil {
            b.Fatal(err)
        }
        b.Run("binary.Read", func(b *testing.B) {
            b.ReportAllocs()
            for range b.N {
                reader := bytes.NewReader(packet)
                _ = binary.Read(reader, binary.LittleEndian, &msgSink)
            }
        })
        b.Run("unmarshal", func(b *testing.B) {
            b.ReportAllocs()
            for range b.N {
                _ = msgSink.unmarshal(packet)
            }
        })
    }

Results:
                                         │      -      │
                                         │   sec/op    │
MessageInitiationUnmarshal/binary.Read-8   1.508µ ± 2%
MessageInitiationUnmarshal/unmarshal-8     12.66n ± 2%

                                         │      -       │
                                         │     B/op     │
MessageInitiationUnmarshal/binary.Read-8   208.0 ± 0%
MessageInitiationUnmarshal/unmarshal-8     0.000 ± 0%

                                         │      -       │
                                         │  allocs/op   │
MessageInitiationUnmarshal/binary.Read-8   2.000 ± 0%
MessageInitiationUnmarshal/unmarshal-8     0.000 ± 0%

cherry picked from commit WireGuard/wireguard-go@9e7529c3d2

Updates tailscale/corp#28879

Signed-off-by: Alexander Yastrebov <yastrebov.alex@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2025-05-29 10:43:47 -07:00
..
allowedips.go global: bump copyright year 2023-02-07 20:39:29 -03:00
allowedips_rand_test.go global: bump copyright year 2023-02-07 20:39:29 -03:00
allowedips_test.go global: bump copyright year 2023-02-07 20:39:29 -03:00
bind_test.go all: rename module (#7) 2023-09-27 15:03:39 -07:00
channels.go device: move Queue{In,Out}boundElement Mutex to container type 2023-09-29 15:32:56 -07:00
constants.go global: bump copyright year 2023-02-07 20:39:29 -03:00
cookie.go global: bump copyright year 2023-02-07 20:39:29 -03:00
cookie_test.go global: bump copyright year 2023-02-07 20:39:29 -03:00
device.go device: fix possible deadlock in close method 2025-05-29 10:43:47 -07:00
device_test.go all: rename module (#7) 2023-09-27 15:03:39 -07:00
devicestate_string.go device: remove deviceStateNew 2021-02-09 15:39:19 +01:00
endpoint_test.go global: bump copyright year 2023-02-07 20:39:29 -03:00
indextable.go global: bump copyright year 2023-02-07 20:39:29 -03:00
ip.go global: bump copyright year 2023-02-07 20:39:29 -03:00
kdf_test.go global: bump copyright year 2023-02-07 20:39:29 -03:00
keypair.go all: rename module (#7) 2023-09-27 15:03:39 -07:00
logger.go global: bump copyright year 2023-02-07 20:39:29 -03:00
mobilequirks.go device: change Peer.endpoint locking to reduce contention 2023-11-21 10:48:58 -08:00
noise-helpers.go device: uniformly check ECDH output for zeros 2023-02-16 16:33:14 +01:00
noise-protocol.go device: reduce RoutineHandshake allocations 2025-05-29 10:43:47 -07:00
noise-types.go global: bump copyright year 2023-02-07 20:39:29 -03:00
noise_test.go all: rename module (#7) 2023-09-27 15:03:39 -07:00
peer.go conn,device: enable cryptorouting via PeerAwareEndpoint 2024-07-05 08:25:31 -07:00
pools.go device: fix WaitPool sync.Cond usage 2024-06-27 10:12:25 -07:00
pools_test.go device: fix WaitPool sync.Cond usage 2024-06-27 10:12:25 -07:00
queueconstants_android.go all: rename module (#7) 2023-09-27 15:03:39 -07:00
queueconstants_default.go all: rename module (#7) 2023-09-27 15:03:39 -07:00
queueconstants_ios.go global: bump copyright year 2023-02-07 20:39:29 -03:00
queueconstants_windows.go global: bump copyright year 2023-02-07 20:39:29 -03:00
race_disabled_test.go global: bump copyright year 2023-02-07 20:39:29 -03:00
race_enabled_test.go global: bump copyright year 2023-02-07 20:39:29 -03:00
receive.go device: reduce RoutineHandshake allocations 2025-05-29 10:43:47 -07:00
send.go device: fix missed return of QueueOutboundElementsContainer to its WaitPool 2024-06-27 10:12:25 -07:00
sticky_default.go all: rename module (#7) 2023-09-27 15:03:39 -07:00
sticky_linux.go device: change Peer.endpoint locking to reduce contention 2023-11-21 10:48:58 -08:00
timers.go device: change Peer.endpoint locking to reduce contention 2023-11-21 10:48:58 -08:00
tun.go all: rename module (#7) 2023-09-27 15:03:39 -07:00
uapi.go device: change Peer.endpoint locking to reduce contention 2023-11-21 10:48:58 -08:00