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-rw-r--r--README.md2
-rw-r--r--conn/bind_linux.go6
-rw-r--r--conn/bind_std.go2
-rw-r--r--conn/bind_windows.go34
-rw-r--r--conn/bindtest/bindtest.go2
-rw-r--r--conn/boundif_android.go2
-rw-r--r--conn/conn.go2
-rw-r--r--conn/default.go2
-rw-r--r--conn/mark_default.go2
-rw-r--r--conn/mark_unix.go2
-rw-r--r--conn/winrio/rio_windows.go2
-rw-r--r--device/alignment_test.go65
-rw-r--r--device/allowedips.go2
-rw-r--r--device/allowedips_rand_test.go2
-rw-r--r--device/allowedips_test.go2
-rw-r--r--device/bind_test.go2
-rw-r--r--device/channels.go2
-rw-r--r--device/constants.go2
-rw-r--r--device/cookie.go2
-rw-r--r--device/cookie_test.go2
-rw-r--r--device/device.go34
-rw-r--r--device/device_test.go8
-rw-r--r--device/endpoint_test.go2
-rw-r--r--device/indextable.go2
-rw-r--r--device/ip.go2
-rw-r--r--device/kdf_test.go2
-rw-r--r--device/keypair.go15
-rw-r--r--device/logger.go2
-rw-r--r--device/misc.go41
-rw-r--r--device/mobilequirks.go2
-rw-r--r--device/noise-helpers.go2
-rw-r--r--device/noise-protocol.go18
-rw-r--r--device/noise-types.go2
-rw-r--r--device/noise_test.go4
-rw-r--r--device/peer.go55
-rw-r--r--device/pools.go10
-rw-r--r--device/pools_test.go25
-rw-r--r--device/queueconstants_android.go2
-rw-r--r--device/queueconstants_default.go2
-rw-r--r--device/queueconstants_ios.go2
-rw-r--r--device/queueconstants_windows.go2
-rw-r--r--device/race_disabled_test.go2
-rw-r--r--device/race_enabled_test.go2
-rw-r--r--device/receive.go17
-rw-r--r--device/send.go23
-rw-r--r--device/sticky_linux.go4
-rw-r--r--device/timers.go33
-rw-r--r--device/tun.go5
-rw-r--r--device/uapi.go13
-rw-r--r--format_test.go2
-rw-r--r--go.mod8
-rw-r--r--go.sum6
-rw-r--r--ipc/namedpipe/file.go20
-rw-r--r--ipc/namedpipe/namedpipe.go10
-rw-r--r--ipc/uapi_bsd.go2
-rw-r--r--ipc/uapi_js.go2
-rw-r--r--ipc/uapi_linux.go2
-rw-r--r--ipc/uapi_unix.go2
-rw-r--r--ipc/uapi_windows.go2
-rw-r--r--main.go2
-rw-r--r--main_windows.go2
-rw-r--r--ratelimiter/ratelimiter.go2
-rw-r--r--ratelimiter/ratelimiter_test.go2
-rw-r--r--replay/replay.go2
-rw-r--r--replay/replay_test.go2
-rw-r--r--rwcancel/rwcancel.go2
-rw-r--r--tai64n/tai64n.go2
-rw-r--r--tai64n/tai64n_test.go2
-rw-r--r--tun/alignment_windows_test.go2
-rw-r--r--tun/netstack/examples/http_client.go2
-rw-r--r--tun/netstack/examples/http_server.go2
-rw-r--r--tun/netstack/examples/ping_client.go2
-rw-r--r--tun/netstack/go.mod17
-rw-r--r--tun/netstack/go.sum973
-rw-r--r--tun/netstack/tun.go105
-rw-r--r--tun/operateonfd.go2
-rw-r--r--tun/tun.go2
-rw-r--r--tun/tun_darwin.go22
-rw-r--r--tun/tun_freebsd.go16
-rw-r--r--tun/tun_linux.go12
-rw-r--r--tun/tun_openbsd.go12
-rw-r--r--tun/tun_windows.go42
-rw-r--r--tun/tuntest/tuntest.go2
83 files changed, 314 insertions, 1445 deletions
diff --git a/README.md b/README.md
index 30ea3ac..d6c15b4 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ $ make
## License
- Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
diff --git a/conn/bind_linux.go b/conn/bind_linux.go
index f11f031..d6eae52 100644
--- a/conn/bind_linux.go
+++ b/conn/bind_linux.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package conn
@@ -331,7 +331,7 @@ func create4(port uint16) (int, uint16, error) {
fd, err := unix.Socket(
unix.AF_INET,
- unix.SOCK_DGRAM,
+ unix.SOCK_DGRAM|unix.SOCK_CLOEXEC,
0,
)
if err != nil {
@@ -373,7 +373,7 @@ func create6(port uint16) (int, uint16, error) {
fd, err := unix.Socket(
unix.AF_INET6,
- unix.SOCK_DGRAM,
+ unix.SOCK_DGRAM|unix.SOCK_CLOEXEC,
0,
)
if err != nil {
diff --git a/conn/bind_std.go b/conn/bind_std.go
index b6a7ab3..4ccc036 100644
--- a/conn/bind_std.go
+++ b/conn/bind_std.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package conn
diff --git a/conn/bind_windows.go b/conn/bind_windows.go
index 9268bc1..bf60b80 100644
--- a/conn/bind_windows.go
+++ b/conn/bind_windows.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package conn
@@ -74,7 +74,7 @@ type afWinRingBind struct {
type WinRingBind struct {
v4, v6 afWinRingBind
mu sync.RWMutex
- isOpen uint32
+ isOpen atomic.Uint32 // 0, 1, or 2
}
func NewDefaultBind() Bind { return NewWinRingBind() }
@@ -212,7 +212,7 @@ func (bind *afWinRingBind) CloseAndZero() {
}
func (bind *WinRingBind) closeAndZero() {
- atomic.StoreUint32(&bind.isOpen, 0)
+ bind.isOpen.Store(0)
bind.v4.CloseAndZero()
bind.v6.CloseAndZero()
}
@@ -276,7 +276,7 @@ func (bind *WinRingBind) Open(port uint16) (recvFns []ReceiveFunc, selectedPort
bind.closeAndZero()
}
}()
- if atomic.LoadUint32(&bind.isOpen) != 0 {
+ if bind.isOpen.Load() != 0 {
return nil, 0, ErrBindAlreadyOpen
}
var sa windows.Sockaddr
@@ -299,17 +299,17 @@ func (bind *WinRingBind) Open(port uint16) (recvFns []ReceiveFunc, selectedPort
return nil, 0, err
}
}
- atomic.StoreUint32(&bind.isOpen, 1)
+ bind.isOpen.Store(1)
return []ReceiveFunc{bind.receiveIPv4, bind.receiveIPv6}, selectedPort, err
}
func (bind *WinRingBind) Close() error {
bind.mu.RLock()
- if atomic.LoadUint32(&bind.isOpen) != 1 {
+ if bind.isOpen.Load() != 1 {
bind.mu.RUnlock()
return nil
}
- atomic.StoreUint32(&bind.isOpen, 2)
+ bind.isOpen.Store(2)
windows.PostQueuedCompletionStatus(bind.v4.rx.iocp, 0, 0, nil)
windows.PostQueuedCompletionStatus(bind.v4.tx.iocp, 0, 0, nil)
windows.PostQueuedCompletionStatus(bind.v6.rx.iocp, 0, 0, nil)
@@ -345,8 +345,8 @@ func (bind *afWinRingBind) InsertReceiveRequest() error {
//go:linkname procyield runtime.procyield
func procyield(cycles uint32)
-func (bind *afWinRingBind) Receive(buf []byte, isOpen *uint32) (int, Endpoint, error) {
- if atomic.LoadUint32(isOpen) != 1 {
+func (bind *afWinRingBind) Receive(buf []byte, isOpen *atomic.Uint32) (int, Endpoint, error) {
+ if isOpen.Load() != 1 {
return 0, nil, net.ErrClosed
}
bind.rx.mu.Lock()
@@ -359,7 +359,7 @@ retry:
count = 0
for tries := 0; count == 0 && tries < receiveSpins; tries++ {
if tries > 0 {
- if atomic.LoadUint32(isOpen) != 1 {
+ if isOpen.Load() != 1 {
return 0, nil, net.ErrClosed
}
procyield(1)
@@ -378,7 +378,7 @@ retry:
if err != nil {
return 0, nil, err
}
- if atomic.LoadUint32(isOpen) != 1 {
+ if isOpen.Load() != 1 {
return 0, nil, net.ErrClosed
}
count = winrio.DequeueCompletion(bind.rx.cq, results[:])
@@ -395,7 +395,7 @@ retry:
// huge packets. Just try again when this happens. The infinite loop this could cause is still limited to
// attacker bandwidth, just like the rest of the receive path.
if windows.Errno(results[0].Status) == windows.WSAEMSGSIZE {
- if atomic.LoadUint32(isOpen) != 1 {
+ if isOpen.Load() != 1 {
return 0, nil, net.ErrClosed
}
goto retry
@@ -421,8 +421,8 @@ func (bind *WinRingBind) receiveIPv6(buf []byte) (int, Endpoint, error) {
return bind.v6.Receive(buf, &bind.isOpen)
}
-func (bind *afWinRingBind) Send(buf []byte, nend *WinRingEndpoint, isOpen *uint32) error {
- if atomic.LoadUint32(isOpen) != 1 {
+func (bind *afWinRingBind) Send(buf []byte, nend *WinRingEndpoint, isOpen *atomic.Uint32) error {
+ if isOpen.Load() != 1 {
return net.ErrClosed
}
if len(buf) > bytesPerPacket {
@@ -444,7 +444,7 @@ func (bind *afWinRingBind) Send(buf []byte, nend *WinRingEndpoint, isOpen *uint3
if err != nil {
return err
}
- if atomic.LoadUint32(isOpen) != 1 {
+ if isOpen.Load() != 1 {
return net.ErrClosed
}
count = winrio.DequeueCompletion(bind.tx.cq, results[:])
@@ -538,7 +538,7 @@ func (bind *StdNetBind) BindSocketToInterface6(interfaceIndex uint32, blackhole
func (bind *WinRingBind) BindSocketToInterface4(interfaceIndex uint32, blackhole bool) error {
bind.mu.RLock()
defer bind.mu.RUnlock()
- if atomic.LoadUint32(&bind.isOpen) != 1 {
+ if bind.isOpen.Load() != 1 {
return net.ErrClosed
}
err := bindSocketToInterface4(bind.v4.sock, interfaceIndex)
@@ -552,7 +552,7 @@ func (bind *WinRingBind) BindSocketToInterface4(interfaceIndex uint32, blackhole
func (bind *WinRingBind) BindSocketToInterface6(interfaceIndex uint32, blackhole bool) error {
bind.mu.RLock()
defer bind.mu.RUnlock()
- if atomic.LoadUint32(&bind.isOpen) != 1 {
+ if bind.isOpen.Load() != 1 {
return net.ErrClosed
}
err := bindSocketToInterface6(bind.v6.sock, interfaceIndex)
diff --git a/conn/bindtest/bindtest.go b/conn/bindtest/bindtest.go
index b38cae6..09f64c6 100644
--- a/conn/bindtest/bindtest.go
+++ b/conn/bindtest/bindtest.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package bindtest
diff --git a/conn/boundif_android.go b/conn/boundif_android.go
index 8b82bfc..e540abb 100644
--- a/conn/boundif_android.go
+++ b/conn/boundif_android.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package conn
diff --git a/conn/conn.go b/conn/conn.go
index 5a93b2b..7a37840 100644
--- a/conn/conn.go
+++ b/conn/conn.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
// Package conn implements WireGuard's network connections.
diff --git a/conn/default.go b/conn/default.go
index e65bb74..a846ea0 100644
--- a/conn/default.go
+++ b/conn/default.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package conn
diff --git a/conn/mark_default.go b/conn/mark_default.go
index 6e01b0d..1df2f75 100644
--- a/conn/mark_default.go
+++ b/conn/mark_default.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package conn
diff --git a/conn/mark_unix.go b/conn/mark_unix.go
index fec154c..d243261 100644
--- a/conn/mark_unix.go
+++ b/conn/mark_unix.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package conn
diff --git a/conn/winrio/rio_windows.go b/conn/winrio/rio_windows.go
index 0911998..91044c3 100644
--- a/conn/winrio/rio_windows.go
+++ b/conn/winrio/rio_windows.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package winrio
diff --git a/device/alignment_test.go b/device/alignment_test.go
deleted file mode 100644
index a918112..0000000
--- a/device/alignment_test.go
+++ /dev/null
@@ -1,65 +0,0 @@
-/* SPDX-License-Identifier: MIT
- *
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
- */
-
-package device
-
-import (
- "reflect"
- "testing"
- "unsafe"
-)
-
-func checkAlignment(t *testing.T, name string, offset uintptr) {
- t.Helper()
- if offset%8 != 0 {
- t.Errorf("offset of %q within struct is %d bytes, which does not align to 64-bit word boundaries (missing %d bytes). Atomic operations will crash on 32-bit systems.", name, offset, 8-(offset%8))
- }
-}
-
-// TestPeerAlignment checks that atomically-accessed fields are
-// aligned to 64-bit boundaries, as required by the atomic package.
-//
-// Unfortunately, violating this rule on 32-bit platforms results in a
-// hard segfault at runtime.
-func TestPeerAlignment(t *testing.T) {
- var p Peer
-
- typ := reflect.TypeOf(&p).Elem()
- t.Logf("Peer type size: %d, with fields:", typ.Size())
- for i := 0; i < typ.NumField(); i++ {
- field := typ.Field(i)
- t.Logf("\t%30s\toffset=%3v\t(type size=%3d, align=%d)",
- field.Name,
- field.Offset,
- field.Type.Size(),
- field.Type.Align(),
- )
- }
-
- checkAlignment(t, "Peer.stats", unsafe.Offsetof(p.stats))
- checkAlignment(t, "Peer.isRunning", unsafe.Offsetof(p.isRunning))
-}
-
-// TestDeviceAlignment checks that atomically-accessed fields are
-// aligned to 64-bit boundaries, as required by the atomic package.
-//
-// Unfortunately, violating this rule on 32-bit platforms results in a
-// hard segfault at runtime.
-func TestDeviceAlignment(t *testing.T) {
- var d Device
-
- typ := reflect.TypeOf(&d).Elem()
- t.Logf("Device type size: %d, with fields:", typ.Size())
- for i := 0; i < typ.NumField(); i++ {
- field := typ.Field(i)
- t.Logf("\t%30s\toffset=%3v\t(type size=%3d, align=%d)",
- field.Name,
- field.Offset,
- field.Type.Size(),
- field.Type.Align(),
- )
- }
- checkAlignment(t, "Device.rate.underLoadUntil", unsafe.Offsetof(d.rate)+unsafe.Offsetof(d.rate.underLoadUntil))
-}
diff --git a/device/allowedips.go b/device/allowedips.go
index 3cac694..33c21ae 100644
--- a/device/allowedips.go
+++ b/device/allowedips.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/allowedips_rand_test.go b/device/allowedips_rand_test.go
index 0d3eecb..606f0ed 100644
--- a/device/allowedips_rand_test.go
+++ b/device/allowedips_rand_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/allowedips_test.go b/device/allowedips_test.go
index 225c788..5cccf95 100644
--- a/device/allowedips_test.go
+++ b/device/allowedips_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/bind_test.go b/device/bind_test.go
index 1c0d247..e2e4428 100644
--- a/device/bind_test.go
+++ b/device/bind_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/channels.go b/device/channels.go
index 6f4370a..a9f2e61 100644
--- a/device/channels.go
+++ b/device/channels.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/constants.go b/device/constants.go
index 53a2526..70cef9d 100644
--- a/device/constants.go
+++ b/device/constants.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/cookie.go b/device/cookie.go
index 840f709..3a90516 100644
--- a/device/cookie.go
+++ b/device/cookie.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/cookie_test.go b/device/cookie_test.go
index 06f306f..e8f36b0 100644
--- a/device/cookie_test.go
+++ b/device/cookie_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/device.go b/device/device.go
index 3625608..2e3469f 100644
--- a/device/device.go
+++ b/device/device.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -30,7 +30,7 @@ type Device struct {
// will become the actual state; Up can fail.
// The device can also change state multiple times between time of check and time of use.
// Unsynchronized uses of state must therefore be advisory/best-effort only.
- state uint32 // actually a deviceState, but typed uint32 for convenience
+ state atomic.Uint32 // actually a deviceState, but typed uint32 for convenience
// stopping blocks until all inputs to Device have been closed.
stopping sync.WaitGroup
// mu protects state changes.
@@ -58,9 +58,8 @@ type Device struct {
keyMap map[NoisePublicKey]*Peer
}
- // Keep this 8-byte aligned
rate struct {
- underLoadUntil int64
+ underLoadUntil atomic.Int64
limiter ratelimiter.Ratelimiter
}
@@ -82,7 +81,7 @@ type Device struct {
tun struct {
device tun.Device
- mtu int32
+ mtu atomic.Int32
}
ipcMutex sync.RWMutex
@@ -94,10 +93,9 @@ type Device struct {
// There are three states: down, up, closed.
// Transitions:
//
-// down -----+
-// ↑↓ ↓
-// up -> closed
-//
+// down -----+
+// ↑↓ ↓
+// up -> closed
type deviceState uint32
//go:generate go run golang.org/x/tools/cmd/stringer -type deviceState -trimprefix=deviceState
@@ -110,7 +108,7 @@ const (
// deviceState returns device.state.state as a deviceState
// See those docs for how to interpret this value.
func (device *Device) deviceState() deviceState {
- return deviceState(atomic.LoadUint32(&device.state.state))
+ return deviceState(device.state.state.Load())
}
// isClosed reports whether the device is closed (or is closing).
@@ -149,14 +147,14 @@ func (device *Device) changeState(want deviceState) (err error) {
case old:
return nil
case deviceStateUp:
- atomic.StoreUint32(&device.state.state, uint32(deviceStateUp))
+ device.state.state.Store(uint32(deviceStateUp))
err = device.upLocked()
if err == nil {
break
}
fallthrough // up failed; bring the device all the way back down
case deviceStateDown:
- atomic.StoreUint32(&device.state.state, uint32(deviceStateDown))
+ device.state.state.Store(uint32(deviceStateDown))
errDown := device.downLocked()
if err == nil {
err = errDown
@@ -182,7 +180,7 @@ func (device *Device) upLocked() error {
device.peers.RLock()
for _, peer := range device.peers.keyMap {
peer.Start()
- if atomic.LoadUint32(&peer.persistentKeepaliveInterval) > 0 {
+ if peer.persistentKeepaliveInterval.Load() > 0 {
peer.SendKeepalive()
}
}
@@ -219,11 +217,11 @@ func (device *Device) IsUnderLoad() bool {
now := time.Now()
underLoad := len(device.queue.handshake.c) >= QueueHandshakeSize/8
if underLoad {
- atomic.StoreInt64(&device.rate.underLoadUntil, now.Add(UnderLoadAfterTime).UnixNano())
+ device.rate.underLoadUntil.Store(now.Add(UnderLoadAfterTime).UnixNano())
return true
}
// check if recently under load
- return atomic.LoadInt64(&device.rate.underLoadUntil) > now.UnixNano()
+ return device.rate.underLoadUntil.Load() > now.UnixNano()
}
func (device *Device) SetPrivateKey(sk NoisePrivateKey) error {
@@ -283,7 +281,7 @@ func (device *Device) SetPrivateKey(sk NoisePrivateKey) error {
func NewDevice(tunDevice tun.Device, bind conn.Bind, logger *Logger) *Device {
device := new(Device)
- device.state.state = uint32(deviceStateDown)
+ device.state.state.Store(uint32(deviceStateDown))
device.closed = make(chan struct{})
device.log = logger
device.net.bind = bind
@@ -293,7 +291,7 @@ func NewDevice(tunDevice tun.Device, bind conn.Bind, logger *Logger) *Device {
device.log.Errorf("Trouble determining MTU, assuming default: %v", err)
mtu = DefaultMTU
}
- device.tun.mtu = int32(mtu)
+ device.tun.mtu.Store(int32(mtu))
device.peers.keyMap = make(map[NoisePublicKey]*Peer)
device.rate.limiter.Init()
device.indexTable.Init()
@@ -359,7 +357,7 @@ func (device *Device) Close() {
if device.isClosed() {
return
}
- atomic.StoreUint32(&device.state.state, uint32(deviceStateClosed))
+ device.state.state.Store(uint32(deviceStateClosed))
device.log.Verbosef("Device closing")
device.tun.device.Close()
diff --git a/device/device_test.go b/device/device_test.go
index ab7236e..44f7d66 100644
--- a/device/device_test.go
+++ b/device/device_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -333,7 +333,7 @@ func BenchmarkThroughput(b *testing.B) {
// Measure how long it takes to receive b.N packets,
// starting when we receive the first packet.
- var recv uint64
+ var recv atomic.Uint64
var elapsed time.Duration
var wg sync.WaitGroup
wg.Add(1)
@@ -342,7 +342,7 @@ func BenchmarkThroughput(b *testing.B) {
var start time.Time
for {
<-pair[0].tun.Inbound
- new := atomic.AddUint64(&recv, 1)
+ new := recv.Add(1)
if new == 1 {
start = time.Now()
}
@@ -358,7 +358,7 @@ func BenchmarkThroughput(b *testing.B) {
ping := tuntest.Ping(pair[0].ip, pair[1].ip)
pingc := pair[1].tun.Outbound
var sent uint64
- for atomic.LoadUint64(&recv) != uint64(b.N) {
+ for recv.Load() != uint64(b.N) {
sent++
pingc <- ping
}
diff --git a/device/endpoint_test.go b/device/endpoint_test.go
index b265be6..a7bf225 100644
--- a/device/endpoint_test.go
+++ b/device/endpoint_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/indextable.go b/device/indextable.go
index 15b8b0d..34e0f72 100644
--- a/device/indextable.go
+++ b/device/indextable.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/ip.go b/device/ip.go
index 50c5040..d2761a3 100644
--- a/device/ip.go
+++ b/device/ip.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/kdf_test.go b/device/kdf_test.go
index 872195c..ef9aafd 100644
--- a/device/kdf_test.go
+++ b/device/kdf_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/keypair.go b/device/keypair.go
index 788c947..b1deceb 100644
--- a/device/keypair.go
+++ b/device/keypair.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -10,7 +10,6 @@ import (
"sync"
"sync/atomic"
"time"
- "unsafe"
"golang.zx2c4.com/wireguard/replay"
)
@@ -23,7 +22,7 @@ import (
*/
type Keypair struct {
- sendNonce uint64 // accessed atomically
+ sendNonce atomic.Uint64
send cipher.AEAD
receive cipher.AEAD
replayFilter replay.Filter
@@ -37,15 +36,7 @@ type Keypairs struct {
sync.RWMutex
current *Keypair
previous *Keypair
- next *Keypair
-}
-
-func (kp *Keypairs) storeNext(next *Keypair) {
- atomic.StorePointer((*unsafe.Pointer)((unsafe.Pointer)(&kp.next)), (unsafe.Pointer)(next))
-}
-
-func (kp *Keypairs) loadNext() *Keypair {
- return (*Keypair)(atomic.LoadPointer((*unsafe.Pointer)((unsafe.Pointer)(&kp.next))))
+ next atomic.Pointer[Keypair]
}
func (kp *Keypairs) Current() *Keypair {
diff --git a/device/logger.go b/device/logger.go
index 29073e9..9c2215d 100644
--- a/device/logger.go
+++ b/device/logger.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/misc.go b/device/misc.go
deleted file mode 100644
index 4126704..0000000
--- a/device/misc.go
+++ /dev/null
@@ -1,41 +0,0 @@
-/* SPDX-License-Identifier: MIT
- *
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
- */
-
-package device
-
-import (
- "sync/atomic"
-)
-
-/* Atomic Boolean */
-
-const (
- AtomicFalse = int32(iota)
- AtomicTrue
-)
-
-type AtomicBool struct {
- int32
-}
-
-func (a *AtomicBool) Get() bool {
- return atomic.LoadInt32(&a.int32) == AtomicTrue
-}
-
-func (a *AtomicBool) Swap(val bool) bool {
- flag := AtomicFalse
- if val {
- flag = AtomicTrue
- }
- return atomic.SwapInt32(&a.int32, flag) == AtomicTrue
-}
-
-func (a *AtomicBool) Set(val bool) {
- flag := AtomicFalse
- if val {
- flag = AtomicTrue
- }
- atomic.StoreInt32(&a.int32, flag)
-}
diff --git a/device/mobilequirks.go b/device/mobilequirks.go
index 680f5c7..de16c1f 100644
--- a/device/mobilequirks.go
+++ b/device/mobilequirks.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/noise-helpers.go b/device/noise-helpers.go
index b6b51fd..8d621d5 100644
--- a/device/noise-helpers.go
+++ b/device/noise-helpers.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/noise-protocol.go b/device/noise-protocol.go
index ffa0452..4df9368 100644
--- a/device/noise-protocol.go
+++ b/device/noise-protocol.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -282,7 +282,7 @@ func (device *Device) ConsumeMessageInitiation(msg *MessageInitiation) *Peer {
// lookup peer
peer := device.LookupPeer(peerPK)
- if peer == nil || !peer.isRunning.Get() {
+ if peer == nil || !peer.isRunning.Load() {
return nil
}
@@ -581,12 +581,12 @@ func (peer *Peer) BeginSymmetricSession() error {
defer keypairs.Unlock()
previous := keypairs.previous
- next := keypairs.loadNext()
+ next := keypairs.next.Load()
current := keypairs.current
if isInitiator {
if next != nil {
- keypairs.storeNext(nil)
+ keypairs.next.Store(nil)
keypairs.previous = next
device.DeleteKeypair(current)
} else {
@@ -595,7 +595,7 @@ func (peer *Peer) BeginSymmetricSession() error {
device.DeleteKeypair(previous)
keypairs.current = keypair
} else {
- keypairs.storeNext(keypair)
+ keypairs.next.Store(keypair)
device.DeleteKeypair(next)
keypairs.previous = nil
device.DeleteKeypair(previous)
@@ -607,18 +607,18 @@ func (peer *Peer) BeginSymmetricSession() error {
func (peer *Peer) ReceivedWithKeypair(receivedKeypair *Keypair) bool {
keypairs := &peer.keypairs
- if keypairs.loadNext() != receivedKeypair {
+ if keypairs.next.Load() != receivedKeypair {
return false
}
keypairs.Lock()
defer keypairs.Unlock()
- if keypairs.loadNext() != receivedKeypair {
+ if keypairs.next.Load() != receivedKeypair {
return false
}
old := keypairs.previous
keypairs.previous = keypairs.current
peer.device.DeleteKeypair(old)
- keypairs.current = keypairs.loadNext()
- keypairs.storeNext(nil)
+ keypairs.current = keypairs.next.Load()
+ keypairs.next.Store(nil)
return true
}
diff --git a/device/noise-types.go b/device/noise-types.go
index 6e850e7..84cf56d 100644
--- a/device/noise-types.go
+++ b/device/noise-types.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/noise_test.go b/device/noise_test.go
index e2f23c6..31bc80f 100644
--- a/device/noise_test.go
+++ b/device/noise_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -148,7 +148,7 @@ func TestNoiseHandshake(t *testing.T) {
t.Fatal("failed to derive keypair for peer 2", err)
}
- key1 := peer1.keypairs.loadNext()
+ key1 := peer1.keypairs.next.Load()
key2 := peer2.keypairs.current
// encrypting / decryption test
diff --git a/device/peer.go b/device/peer.go
index 5bd52df..253a4c2 100644
--- a/device/peer.go
+++ b/device/peer.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -16,24 +16,16 @@ import (
)
type Peer struct {
- isRunning AtomicBool
- sync.RWMutex // Mostly protects endpoint, but is generally taken whenever we modify peer
- keypairs Keypairs
- handshake Handshake
- device *Device
- endpoint conn.Endpoint
- stopping sync.WaitGroup // routines pending stop
-
- // These fields are accessed with atomic operations, which must be
- // 64-bit aligned even on 32-bit platforms. Go guarantees that an
- // allocated struct will be 64-bit aligned. So we place
- // atomically-accessed fields up front, so that they can share in
- // this alignment before smaller fields throw it off.
- stats struct {
- txBytes uint64 // bytes send to peer (endpoint)
- rxBytes uint64 // bytes received from peer
- lastHandshakeNano int64 // nano seconds since epoch
- }
+ isRunning atomic.Bool
+ sync.RWMutex // Mostly protects endpoint, but is generally taken whenever we modify peer
+ keypairs Keypairs
+ handshake Handshake
+ device *Device
+ endpoint conn.Endpoint
+ stopping sync.WaitGroup // routines pending stop
+ txBytes atomic.Uint64 // bytes send to peer (endpoint)
+ rxBytes atomic.Uint64 // bytes received from peer
+ lastHandshakeNano atomic.Int64 // nano seconds since epoch
disableRoaming bool
@@ -43,9 +35,9 @@ type Peer struct {
newHandshake *Timer
zeroKeyMaterial *Timer
persistentKeepalive *Timer
- handshakeAttempts uint32
- needAnotherKeepalive AtomicBool
- sentLastMinuteHandshake AtomicBool
+ handshakeAttempts atomic.Uint32
+ needAnotherKeepalive atomic.Bool
+ sentLastMinuteHandshake atomic.Bool
}
state struct {
@@ -60,7 +52,7 @@ type Peer struct {
cookieGenerator CookieGenerator
trieEntries list.List
- persistentKeepaliveInterval uint32 // accessed atomically
+ persistentKeepaliveInterval atomic.Uint32
}
func (device *Device) NewPeer(pk NoisePublicKey) (*Peer, error) {
@@ -133,7 +125,7 @@ func (peer *Peer) SendBuffer(buffer []byte) error {
err := peer.device.net.bind.Send(buffer, peer.endpoint)
if err == nil {
- atomic.AddUint64(&peer.stats.txBytes, uint64(len(buffer)))
+ peer.txBytes.Add(uint64(len(buffer)))
}
return err
}
@@ -174,7 +166,7 @@ func (peer *Peer) Start() {
peer.state.Lock()
defer peer.state.Unlock()
- if peer.isRunning.Get() {
+ if peer.isRunning.Load() {
return
}
@@ -198,7 +190,7 @@ func (peer *Peer) Start() {
go peer.RoutineSequentialSender()
go peer.RoutineSequentialReceiver()
- peer.isRunning.Set(true)
+ peer.isRunning.Store(true)
}
func (peer *Peer) ZeroAndFlushAll() {
@@ -210,10 +202,10 @@ func (peer *Peer) ZeroAndFlushAll() {
keypairs.Lock()
device.DeleteKeypair(keypairs.previous)
device.DeleteKeypair(keypairs.current)
- device.DeleteKeypair(keypairs.loadNext())
+ device.DeleteKeypair(keypairs.next.Load())
keypairs.previous = nil
keypairs.current = nil
- keypairs.storeNext(nil)
+ keypairs.next.Store(nil)
keypairs.Unlock()
// clear handshake state
@@ -238,11 +230,10 @@ func (peer *Peer) ExpireCurrentKeypairs() {
keypairs := &peer.keypairs
keypairs.Lock()
if keypairs.current != nil {
- atomic.StoreUint64(&keypairs.current.sendNonce, RejectAfterMessages)
+ keypairs.current.sendNonce.Store(RejectAfterMessages)
}
- if keypairs.next != nil {
- next := keypairs.loadNext()
- atomic.StoreUint64(&next.sendNonce, RejectAfterMessages)
+ if next := keypairs.next.Load(); next != nil {
+ next.sendNonce.Store(RejectAfterMessages)
}
keypairs.Unlock()
}
diff --git a/device/pools.go b/device/pools.go
index f40477b..2d5b290 100644
--- a/device/pools.go
+++ b/device/pools.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -14,7 +14,7 @@ type WaitPool struct {
pool sync.Pool
cond sync.Cond
lock sync.Mutex
- count uint32
+ count atomic.Uint32
max uint32
}
@@ -27,10 +27,10 @@ func NewWaitPool(max uint32, new func() any) *WaitPool {
func (p *WaitPool) Get() any {
if p.max != 0 {
p.lock.Lock()
- for atomic.LoadUint32(&p.count) >= p.max {
+ for p.count.Load() >= p.max {
p.cond.Wait()
}
- atomic.AddUint32(&p.count, 1)
+ p.count.Add(1)
p.lock.Unlock()
}
return p.pool.Get()
@@ -41,7 +41,7 @@ func (p *WaitPool) Put(x any) {
if p.max == 0 {
return
}
- atomic.AddUint32(&p.count, ^uint32(0))
+ p.count.Add(^uint32(0))
p.cond.Signal()
}
diff --git a/device/pools_test.go b/device/pools_test.go
index 17e2298..f9a5ab3 100644
--- a/device/pools_test.go
+++ b/device/pools_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -17,29 +17,31 @@ import (
func TestWaitPool(t *testing.T) {
t.Skip("Currently disabled")
var wg sync.WaitGroup
- trials := int32(100000)
+ var trials atomic.Int32
+ startTrials := int32(100000)
if raceEnabled {
// This test can be very slow with -race.
- trials /= 10
+ startTrials /= 10
}
+ trials.Store(startTrials)
workers := runtime.NumCPU() + 2
if workers-4 <= 0 {
t.Skip("Not enough cores")
}
p := NewWaitPool(uint32(workers-4), func() any { return make([]byte, 16) })
wg.Add(workers)
- max := uint32(0)
+ var max atomic.Uint32
updateMax := func() {
- count := atomic.LoadUint32(&p.count)
+ count := p.count.Load()
if count > p.max {
t.Errorf("count (%d) > max (%d)", count, p.max)
}
for {
- old := atomic.LoadUint32(&max)
+ old := max.Load()
if count <= old {
break
}
- if atomic.CompareAndSwapUint32(&max, old, count) {
+ if max.CompareAndSwap(old, count) {
break
}
}
@@ -47,7 +49,7 @@ func TestWaitPool(t *testing.T) {
for i := 0; i < workers; i++ {
go func() {
defer wg.Done()
- for atomic.AddInt32(&trials, -1) > 0 {
+ for trials.Add(-1) > 0 {
updateMax()
x := p.Get()
updateMax()
@@ -59,14 +61,15 @@ func TestWaitPool(t *testing.T) {
}()
}
wg.Wait()
- if max != p.max {
+ if max.Load() != p.max {
t.Errorf("Actual maximum count (%d) != ideal maximum count (%d)", max, p.max)
}
}
func BenchmarkWaitPool(b *testing.B) {
var wg sync.WaitGroup
- trials := int32(b.N)
+ var trials atomic.Int32
+ trials.Store(int32(b.N))
workers := runtime.NumCPU() + 2
if workers-4 <= 0 {
b.Skip("Not enough cores")
@@ -77,7 +80,7 @@ func BenchmarkWaitPool(b *testing.B) {
for i := 0; i < workers; i++ {
go func() {
defer wg.Done()
- for atomic.AddInt32(&trials, -1) > 0 {
+ for trials.Add(-1) > 0 {
x := p.Get()
time.Sleep(time.Duration(rand.Intn(100)) * time.Microsecond)
p.Put(x)
diff --git a/device/queueconstants_android.go b/device/queueconstants_android.go
index 7abc33a..95c311a 100644
--- a/device/queueconstants_android.go
+++ b/device/queueconstants_android.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/queueconstants_default.go b/device/queueconstants_default.go
index 66ef600..21f0dae 100644
--- a/device/queueconstants_default.go
+++ b/device/queueconstants_default.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/queueconstants_ios.go b/device/queueconstants_ios.go
index 854e4c2..d2b4f88 100644
--- a/device/queueconstants_ios.go
+++ b/device/queueconstants_ios.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/queueconstants_windows.go b/device/queueconstants_windows.go
index e330a6b..dd2403d 100644
--- a/device/queueconstants_windows.go
+++ b/device/queueconstants_windows.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/race_disabled_test.go b/device/race_disabled_test.go
index b3db3a1..fffdc8e 100644
--- a/device/race_disabled_test.go
+++ b/device/race_disabled_test.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/race_enabled_test.go b/device/race_enabled_test.go
index 1565100..6336d60 100644
--- a/device/race_enabled_test.go
+++ b/device/race_enabled_test.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
diff --git a/device/receive.go b/device/receive.go
index cc34498..4c863e3 100644
--- a/device/receive.go
+++ b/device/receive.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -11,7 +11,6 @@ import (
"errors"
"net"
"sync"
- "sync/atomic"
"time"
"golang.org/x/crypto/chacha20poly1305"
@@ -52,12 +51,12 @@ func (elem *QueueInboundElement) clearPointers() {
* NOTE: Not thread safe, but called by sequential receiver!
*/
func (peer *Peer) keepKeyFreshReceiving() {
- if peer.timers.sentLastMinuteHandshake.Get() {
+ if peer.timers.sentLastMinuteHandshake.Load() {
return
}
keypair := peer.keypairs.Current()
if keypair != nil && keypair.isInitiator && time.Since(keypair.created) > (RejectAfterTime-KeepaliveTimeout-RekeyTimeout) {
- peer.timers.sentLastMinuteHandshake.Set(true)
+ peer.timers.sentLastMinuteHandshake.Store(true)
peer.SendHandshakeInitiation(false)
}
}
@@ -163,7 +162,7 @@ func (device *Device) RoutineReceiveIncoming(recv conn.ReceiveFunc) {
elem.Lock()
// add to decryption queues
- if peer.isRunning.Get() {
+ if peer.isRunning.Load() {
peer.queue.inbound.c <- elem
device.queue.decryption.c <- elem
buffer = device.GetMessageBuffer()
@@ -268,7 +267,7 @@ func (device *Device) RoutineHandshake(id int) {
// consume reply
- if peer := entry.peer; peer.isRunning.Get() {
+ if peer := entry.peer; peer.isRunning.Load() {
device.log.Verbosef("Receiving cookie response from %s", elem.endpoint.DstToString())
if !peer.cookieGenerator.ConsumeReply(&reply) {
device.log.Verbosef("Could not decrypt invalid cookie response")
@@ -341,7 +340,7 @@ func (device *Device) RoutineHandshake(id int) {
peer.SetEndpointFromPacket(elem.endpoint)
device.log.Verbosef("%v - Received handshake initiation", peer)
- atomic.AddUint64(&peer.stats.rxBytes, uint64(len(elem.packet)))
+ peer.rxBytes.Add(uint64(len(elem.packet)))
peer.SendHandshakeResponse()
@@ -369,7 +368,7 @@ func (device *Device) RoutineHandshake(id int) {
peer.SetEndpointFromPacket(elem.endpoint)
device.log.Verbosef("%v - Received handshake response", peer)
- atomic.AddUint64(&peer.stats.rxBytes, uint64(len(elem.packet)))
+ peer.rxBytes.Add(uint64(len(elem.packet)))
// update timers
@@ -426,7 +425,7 @@ func (peer *Peer) RoutineSequentialReceiver() {
peer.keepKeyFreshReceiving()
peer.timersAnyAuthenticatedPacketTraversal()
peer.timersAnyAuthenticatedPacketReceived()
- atomic.AddUint64(&peer.stats.rxBytes, uint64(len(elem.packet)+MinMessageSize))
+ peer.rxBytes.Add(uint64(len(elem.packet) + MinMessageSize))
if len(elem.packet) == 0 {
device.log.Verbosef("%v - Receiving keepalive packet", peer)
diff --git a/device/send.go b/device/send.go
index 0a7135f..5278500 100644
--- a/device/send.go
+++ b/device/send.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -12,7 +12,6 @@ import (
"net"
"os"
"sync"
- "sync/atomic"
"time"
"golang.org/x/crypto/chacha20poly1305"
@@ -76,7 +75,7 @@ func (elem *QueueOutboundElement) clearPointers() {
/* Queues a keepalive if no packets are queued for peer
*/
func (peer *Peer) SendKeepalive() {
- if len(peer.queue.staged) == 0 && peer.isRunning.Get() {
+ if len(peer.queue.staged) == 0 && peer.isRunning.Load() {
elem := peer.device.NewOutboundElement()
select {
case peer.queue.staged <- elem:
@@ -91,7 +90,7 @@ func (peer *Peer) SendKeepalive() {
func (peer *Peer) SendHandshakeInitiation(isRetry bool) error {
if !isRetry {
- atomic.StoreUint32(&peer.timers.handshakeAttempts, 0)
+ peer.timers.handshakeAttempts.Store(0)
}
peer.handshake.mutex.RLock()
@@ -193,7 +192,7 @@ func (peer *Peer) keepKeyFreshSending() {
if keypair == nil {
return
}
- nonce := atomic.LoadUint64(&keypair.sendNonce)
+ nonce := keypair.sendNonce.Load()
if nonce > RekeyAfterMessages || (keypair.isInitiator && time.Since(keypair.created) > RekeyAfterTime) {
peer.SendHandshakeInitiation(false)
}
@@ -269,7 +268,7 @@ func (device *Device) RoutineReadFromTUN() {
if peer == nil {
continue
}
- if peer.isRunning.Get() {
+ if peer.isRunning.Load() {
peer.StagePacket(elem)
elem = nil
peer.SendStagedPackets()
@@ -300,7 +299,7 @@ top:
}
keypair := peer.keypairs.Current()
- if keypair == nil || atomic.LoadUint64(&keypair.sendNonce) >= RejectAfterMessages || time.Since(keypair.created) >= RejectAfterTime {
+ if keypair == nil || keypair.sendNonce.Load() >= RejectAfterMessages || time.Since(keypair.created) >= RejectAfterTime {
peer.SendHandshakeInitiation(false)
return
}
@@ -309,9 +308,9 @@ top:
select {
case elem := <-peer.queue.staged:
elem.peer = peer
- elem.nonce = atomic.AddUint64(&keypair.sendNonce, 1) - 1
+ elem.nonce = keypair.sendNonce.Add(1) - 1
if elem.nonce >= RejectAfterMessages {
- atomic.StoreUint64(&keypair.sendNonce, RejectAfterMessages)
+ keypair.sendNonce.Store(RejectAfterMessages)
peer.StagePacket(elem) // XXX: Out of order, but we can't front-load go chans
goto top
}
@@ -320,7 +319,7 @@ top:
elem.Lock()
// add to parallel and sequential queue
- if peer.isRunning.Get() {
+ if peer.isRunning.Load() {
peer.queue.outbound.c <- elem
peer.device.queue.encryption.c <- elem
} else {
@@ -385,7 +384,7 @@ func (device *Device) RoutineEncryption(id int) {
binary.LittleEndian.PutUint64(fieldNonce, elem.nonce)
// pad content to multiple of 16
- paddingSize := calculatePaddingSize(len(elem.packet), int(atomic.LoadInt32(&device.tun.mtu)))
+ paddingSize := calculatePaddingSize(len(elem.packet), int(device.tun.mtu.Load()))
elem.packet = append(elem.packet, paddingZeros[:paddingSize]...)
// encrypt content and release to consumer
@@ -419,7 +418,7 @@ func (peer *Peer) RoutineSequentialSender() {
return
}
elem.Lock()
- if !peer.isRunning.Get() {
+ if !peer.isRunning.Load() {
// peer has been stopped; return re-usable elems to the shared pool.
// This is an optimization only. It is possible for the peer to be stopped
// immediately after this check, in which case, elem will get processed.
diff --git a/device/sticky_linux.go b/device/sticky_linux.go
index 6193ea3..e90ae08 100644
--- a/device/sticky_linux.go
+++ b/device/sticky_linux.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*
* This implements userspace semantics of "sticky sockets", modeled after
* WireGuard's kernelspace implementation. This is more or less a straight port
@@ -204,7 +204,7 @@ func (device *Device) routineRouteListener(bind conn.Bind, netlinkSock int, netl
}
func createNetlinkRouteSocket() (int, error) {
- sock, err := unix.Socket(unix.AF_NETLINK, unix.SOCK_RAW, unix.NETLINK_ROUTE)
+ sock, err := unix.Socket(unix.AF_NETLINK, unix.SOCK_RAW|unix.SOCK_CLOEXEC, unix.NETLINK_ROUTE)
if err != nil {
return -1, err
}
diff --git a/device/timers.go b/device/timers.go
index 4d2d0f8..daed714 100644
--- a/device/timers.go
+++ b/device/timers.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*
* This is based heavily on timers.c from the kernel implementation.
*/
@@ -9,7 +9,6 @@ package device
import (
"sync"
- "sync/atomic"
"time"
_ "unsafe"
)
@@ -74,11 +73,11 @@ func (timer *Timer) IsPending() bool {
}
func (peer *Peer) timersActive() bool {
- return peer.isRunning.Get() && peer.device != nil && peer.device.isUp()
+ return peer.isRunning.Load() && peer.device != nil && peer.device.isUp()
}
func expiredRetransmitHandshake(peer *Peer) {
- if atomic.LoadUint32(&peer.timers.handshakeAttempts) > MaxTimerHandshakes {
+ if peer.timers.handshakeAttempts.Load() > MaxTimerHandshakes {
peer.device.log.Verbosef("%s - Handshake did not complete after %d attempts, giving up", peer, MaxTimerHandshakes+2)
if peer.timersActive() {
@@ -97,8 +96,8 @@ func expiredRetransmitHandshake(peer *Peer) {
peer.timers.zeroKeyMaterial.Mod(RejectAfterTime * 3)
}
} else {
- atomic.AddUint32(&peer.timers.handshakeAttempts, 1)
- peer.device.log.Verbosef("%s - Handshake did not complete after %d seconds, retrying (try %d)", peer, int(RekeyTimeout.Seconds()), atomic.LoadUint32(&peer.timers.handshakeAttempts)+1)
+ peer.timers.handshakeAttempts.Add(1)
+ peer.device.log.Verbosef("%s - Handshake did not complete after %d seconds, retrying (try %d)", peer, int(RekeyTimeout.Seconds()), peer.timers.handshakeAttempts.Load()+1)
/* We clear the endpoint address src address, in case this is the cause of trouble. */
peer.Lock()
@@ -113,8 +112,8 @@ func expiredRetransmitHandshake(peer *Peer) {
func expiredSendKeepalive(peer *Peer) {
peer.SendKeepalive()
- if peer.timers.needAnotherKeepalive.Get() {
- peer.timers.needAnotherKeepalive.Set(false)
+ if peer.timers.needAnotherKeepalive.Load() {
+ peer.timers.needAnotherKeepalive.Store(false)
if peer.timersActive() {
peer.timers.sendKeepalive.Mod(KeepaliveTimeout)
}
@@ -138,7 +137,7 @@ func expiredZeroKeyMaterial(peer *Peer) {
}
func expiredPersistentKeepalive(peer *Peer) {
- if atomic.LoadUint32(&peer.persistentKeepaliveInterval) > 0 {
+ if peer.persistentKeepaliveInterval.Load() > 0 {
peer.SendKeepalive()
}
}
@@ -156,7 +155,7 @@ func (peer *Peer) timersDataReceived() {
if !peer.timers.sendKeepalive.IsPending() {
peer.timers.sendKeepalive.Mod(KeepaliveTimeout)
} else {
- peer.timers.needAnotherKeepalive.Set(true)
+ peer.timers.needAnotherKeepalive.Store(true)
}
}
}
@@ -187,9 +186,9 @@ func (peer *Peer) timersHandshakeComplete() {
if peer.timersActive() {
peer.timers.retransmitHandshake.Del()
}
- atomic.StoreUint32(&peer.timers.handshakeAttempts, 0)
- peer.timers.sentLastMinuteHandshake.Set(false)
- atomic.StoreInt64(&peer.stats.lastHandshakeNano, time.Now().UnixNano())
+ peer.timers.handshakeAttempts.Store(0)
+ peer.timers.sentLastMinuteHandshake.Store(false)
+ peer.lastHandshakeNano.Store(time.Now().UnixNano())
}
/* Should be called after an ephemeral key is created, which is before sending a handshake response or after receiving a handshake response. */
@@ -201,7 +200,7 @@ func (peer *Peer) timersSessionDerived() {
/* Should be called before a packet with authentication -- keepalive, data, or handshake -- is sent, or after one is received. */
func (peer *Peer) timersAnyAuthenticatedPacketTraversal() {
- keepalive := atomic.LoadUint32(&peer.persistentKeepaliveInterval)
+ keepalive := peer.persistentKeepaliveInterval.Load()
if keepalive > 0 && peer.timersActive() {
peer.timers.persistentKeepalive.Mod(time.Duration(keepalive) * time.Second)
}
@@ -216,9 +215,9 @@ func (peer *Peer) timersInit() {
}
func (peer *Peer) timersStart() {
- atomic.StoreUint32(&peer.timers.handshakeAttempts, 0)
- peer.timers.sentLastMinuteHandshake.Set(false)
- peer.timers.needAnotherKeepalive.Set(false)
+ peer.timers.handshakeAttempts.Store(0)
+ peer.timers.sentLastMinuteHandshake.Store(false)
+ peer.timers.needAnotherKeepalive.Store(false)
}
func (peer *Peer) timersStop() {
diff --git a/device/tun.go b/device/tun.go
index 4af9548..42cf3cb 100644
--- a/device/tun.go
+++ b/device/tun.go
@@ -1,13 +1,12 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
import (
"fmt"
- "sync/atomic"
"golang.zx2c4.com/wireguard/tun"
)
@@ -33,7 +32,7 @@ func (device *Device) RoutineTUNEventReader() {
tooLarge = fmt.Sprintf(" (too large, capped at %v)", MaxContentSize)
mtu = MaxContentSize
}
- old := atomic.SwapInt32(&device.tun.mtu, int32(mtu))
+ old := device.tun.mtu.Swap(int32(mtu))
if int(old) != mtu {
device.log.Verbosef("MTU updated: %v%s", mtu, tooLarge)
}
diff --git a/device/uapi.go b/device/uapi.go
index 30dd97e..f4dc29d 100644
--- a/device/uapi.go
+++ b/device/uapi.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package device
@@ -16,7 +16,6 @@ import (
"strconv"
"strings"
"sync"
- "sync/atomic"
"time"
"golang.zx2c4.com/wireguard/ipc"
@@ -112,15 +111,15 @@ func (device *Device) IpcGetOperation(w io.Writer) error {
sendf("endpoint=%s", peer.endpoint.DstToString())
}
- nano := atomic.LoadInt64(&peer.stats.lastHandshakeNano)
+ nano := peer.lastHandshakeNano.Load()
secs := nano / time.Second.Nanoseconds()
nano %= time.Second.Nanoseconds()
sendf("last_handshake_time_sec=%d", secs)
sendf("last_handshake_time_nsec=%d", nano)
- sendf("tx_bytes=%d", atomic.LoadUint64(&peer.stats.txBytes))
- sendf("rx_bytes=%d", atomic.LoadUint64(&peer.stats.rxBytes))
- sendf("persistent_keepalive_interval=%d", atomic.LoadUint32(&peer.persistentKeepaliveInterval))
+ sendf("tx_bytes=%d", peer.txBytes.Load())
+ sendf("rx_bytes=%d", peer.rxBytes.Load())
+ sendf("persistent_keepalive_interval=%d", peer.persistentKeepaliveInterval.Load())
device.allowedips.EntriesForPeer(peer, func(prefix netip.Prefix) bool {
sendf("allowed_ip=%s", prefix.String())
@@ -358,7 +357,7 @@ func (device *Device) handlePeerLine(peer *ipcSetPeer, key, value string) error
return ipcErrorf(ipc.IpcErrorInvalid, "failed to set persistent keepalive interval: %w", err)
}
- old := atomic.SwapUint32(&peer.persistentKeepaliveInterval, uint32(secs))
+ old := peer.persistentKeepaliveInterval.Swap(uint32(secs))
// Send immediate keepalive if we're turning it on and before it wasn't on.
peer.pkaOn = old == 0 && secs != 0
diff --git a/format_test.go b/format_test.go
index 198cd49..d480eb8 100644
--- a/format_test.go
+++ b/format_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package main
diff --git a/go.mod b/go.mod
index 4fcb2fa..c180d1b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,10 +1,16 @@
module golang.zx2c4.com/wireguard
-go 1.18
+go 1.19
require (
golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd
golang.org/x/net v0.0.0-20220225172249-27dd8689420f
golang.org/x/sys v0.0.0-20220315194320-039c03cc5b86
golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224
+ gvisor.dev/gvisor v0.0.0-20220817001344-846276b3dbc5
+)
+
+require (
+ github.com/google/btree v1.0.1 // indirect
+ golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
)
diff --git a/go.sum b/go.sum
index 3e4e323..5f417a7 100644
--- a/go.sum
+++ b/go.sum
@@ -1,8 +1,14 @@
+github.com/google/btree v1.0.1 h1:gK4Kx5IaGY9CD5sPJ36FHiBJ6ZXl0kilRiiCj+jdYp4=
+github.com/google/btree v1.0.1/go.mod h1:xXMiIv4Fb/0kKde4SpL7qlzvu5cMJDRkFDxJfI9uaxA=
golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd h1:XcWmESyNjXJMLahc3mqVQJcgSTDxFxhETVlfk9uGc38=
golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/net v0.0.0-20220225172249-27dd8689420f h1:oA4XRj0qtSt8Yo1Zms0CUlsT3KG69V2UGQWPBxujDmc=
golang.org/x/net v0.0.0-20220225172249-27dd8689420f/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
golang.org/x/sys v0.0.0-20220315194320-039c03cc5b86 h1:A9i04dxx7Cribqbs8jf3FQLogkL/CV2YN7hj9KWJCkc=
golang.org/x/sys v0.0.0-20220315194320-039c03cc5b86/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/time v0.0.0-20191024005414-555d28b269f0 h1:/5xXl8Y5W96D+TtHSlonuFqGHIWVuyCkGJLwGh9JJFs=
+golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 h1:Ug9qvr1myri/zFN6xL17LSCBGFDnphBBhzmILHsM5TY=
golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
+gvisor.dev/gvisor v0.0.0-20220817001344-846276b3dbc5 h1:cv/zaNV0nr1mJzaeo4S5mHIm5va1W0/9J3/5prlsuRM=
+gvisor.dev/gvisor v0.0.0-20220817001344-846276b3dbc5/go.mod h1:TIvkJD0sxe8pIob3p6T8IzxXunlp6yfgktvTNp+DGNM=
diff --git a/ipc/namedpipe/file.go b/ipc/namedpipe/file.go
index c5dd48a..ec9b8d4 100644
--- a/ipc/namedpipe/file.go
+++ b/ipc/namedpipe/file.go
@@ -54,7 +54,7 @@ type file struct {
handle windows.Handle
wg sync.WaitGroup
wgLock sync.RWMutex
- closing uint32 // used as atomic boolean
+ closing atomic.Bool
socket bool
readDeadline deadlineHandler
writeDeadline deadlineHandler
@@ -65,7 +65,7 @@ type deadlineHandler struct {
channel timeoutChan
channelLock sync.RWMutex
timer *time.Timer
- timedout uint32 // used as atomic boolean
+ timedout atomic.Bool
}
// makeFile makes a new file from an existing file handle
@@ -89,7 +89,7 @@ func makeFile(h windows.Handle) (*file, error) {
func (f *file) closeHandle() {
f.wgLock.Lock()
// Atomically set that we are closing, releasing the resources only once.
- if atomic.SwapUint32(&f.closing, 1) == 0 {
+ if f.closing.Swap(true) == false {
f.wgLock.Unlock()
// cancel all IO and wait for it to complete
windows.CancelIoEx(f.handle, nil)
@@ -112,7 +112,7 @@ func (f *file) Close() error {
// The caller must call f.wg.Done() when the IO is finished, prior to Close() returning.
func (f *file) prepareIo() (*ioOperation, error) {
f.wgLock.RLock()
- if atomic.LoadUint32(&f.closing) == 1 {
+ if f.closing.Load() {
f.wgLock.RUnlock()
return nil, os.ErrClosed
}
@@ -144,7 +144,7 @@ func (f *file) asyncIo(c *ioOperation, d *deadlineHandler, bytes uint32, err err
return int(bytes), err
}
- if atomic.LoadUint32(&f.closing) == 1 {
+ if f.closing.Load() {
windows.CancelIoEx(f.handle, &c.o)
}
@@ -160,7 +160,7 @@ func (f *file) asyncIo(c *ioOperation, d *deadlineHandler, bytes uint32, err err
case r = <-c.ch:
err = r.err
if err == windows.ERROR_OPERATION_ABORTED {
- if atomic.LoadUint32(&f.closing) == 1 {
+ if f.closing.Load() {
err = os.ErrClosed
}
} else if err != nil && f.socket {
@@ -192,7 +192,7 @@ func (f *file) Read(b []byte) (int, error) {
}
defer f.wg.Done()
- if atomic.LoadUint32(&f.readDeadline.timedout) == 1 {
+ if f.readDeadline.timedout.Load() {
return 0, os.ErrDeadlineExceeded
}
@@ -219,7 +219,7 @@ func (f *file) Write(b []byte) (int, error) {
}
defer f.wg.Done()
- if atomic.LoadUint32(&f.writeDeadline.timedout) == 1 {
+ if f.writeDeadline.timedout.Load() {
return 0, os.ErrDeadlineExceeded
}
@@ -256,7 +256,7 @@ func (d *deadlineHandler) set(deadline time.Time) error {
}
d.timer = nil
}
- atomic.StoreUint32(&d.timedout, 0)
+ d.timedout.Store(false)
select {
case <-d.channel:
@@ -271,7 +271,7 @@ func (d *deadlineHandler) set(deadline time.Time) error {
}
timeoutIO := func() {
- atomic.StoreUint32(&d.timedout, 1)
+ d.timedout.Store(true)
close(d.channel)
}
diff --git a/ipc/namedpipe/namedpipe.go b/ipc/namedpipe/namedpipe.go
index 6db5ea3..92cc1ee 100644
--- a/ipc/namedpipe/namedpipe.go
+++ b/ipc/namedpipe/namedpipe.go
@@ -29,7 +29,7 @@ type pipe struct {
type messageBytePipe struct {
pipe
- writeClosed int32
+ writeClosed atomic.Bool
readEOF bool
}
@@ -51,17 +51,17 @@ func (f *pipe) SetDeadline(t time.Time) error {
// CloseWrite closes the write side of a message pipe in byte mode.
func (f *messageBytePipe) CloseWrite() error {
- if !atomic.CompareAndSwapInt32(&f.writeClosed, 0, 1) {
+ if !f.writeClosed.CompareAndSwap(false, true) {
return io.ErrClosedPipe
}
err := f.file.Flush()
if err != nil {
- atomic.StoreInt32(&f.writeClosed, 0)
+ f.writeClosed.Store(false)
return err
}
_, err = f.file.Write(nil)
if err != nil {
- atomic.StoreInt32(&f.writeClosed, 0)
+ f.writeClosed.Store(false)
return err
}
return nil
@@ -70,7 +70,7 @@ func (f *messageBytePipe) CloseWrite() error {
// Write writes bytes to a message pipe in byte mode. Zero-byte writes are ignored, since
// they are used to implement CloseWrite.
func (f *messageBytePipe) Write(b []byte) (int, error) {
- if atomic.LoadInt32(&f.writeClosed) != 0 {
+ if f.writeClosed.Load() {
return 0, io.ErrClosedPipe
}
if len(b) == 0 {
diff --git a/ipc/uapi_bsd.go b/ipc/uapi_bsd.go
index 303adeb..0dd2068 100644
--- a/ipc/uapi_bsd.go
+++ b/ipc/uapi_bsd.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package ipc
diff --git a/ipc/uapi_js.go b/ipc/uapi_js.go
index be36b5d..da59dc5 100644
--- a/ipc/uapi_js.go
+++ b/ipc/uapi_js.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package ipc
diff --git a/ipc/uapi_linux.go b/ipc/uapi_linux.go
index 30a8eb4..cdf1d28 100644
--- a/ipc/uapi_linux.go
+++ b/ipc/uapi_linux.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package ipc
diff --git a/ipc/uapi_unix.go b/ipc/uapi_unix.go
index 6f1ee47..081c270 100644
--- a/ipc/uapi_unix.go
+++ b/ipc/uapi_unix.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package ipc
diff --git a/ipc/uapi_windows.go b/ipc/uapi_windows.go
index a1bfbd1..27db00a 100644
--- a/ipc/uapi_windows.go
+++ b/ipc/uapi_windows.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package ipc
diff --git a/main.go b/main.go
index b35ac29..6532dff 100644
--- a/main.go
+++ b/main.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package main
diff --git a/main_windows.go b/main_windows.go
index 5a7b136..a647f58 100644
--- a/main_windows.go
+++ b/main_windows.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package main
diff --git a/ratelimiter/ratelimiter.go b/ratelimiter/ratelimiter.go
index 1e3c252..b2e6ed1 100644
--- a/ratelimiter/ratelimiter.go
+++ b/ratelimiter/ratelimiter.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package ratelimiter
diff --git a/ratelimiter/ratelimiter_test.go b/ratelimiter/ratelimiter_test.go
index ca7db72..0542e14 100644
--- a/ratelimiter/ratelimiter_test.go
+++ b/ratelimiter/ratelimiter_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package ratelimiter
diff --git a/replay/replay.go b/replay/replay.go
index f140272..bc720d7 100644
--- a/replay/replay.go
+++ b/replay/replay.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
// Package replay implements an efficient anti-replay algorithm as specified in RFC 6479.
diff --git a/replay/replay_test.go b/replay/replay_test.go
index 28c3a0e..cb708d7 100644
--- a/replay/replay_test.go
+++ b/replay/replay_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package replay
diff --git a/rwcancel/rwcancel.go b/rwcancel/rwcancel.go
index c3b2299..89f56b3 100644
--- a/rwcancel/rwcancel.go
+++ b/rwcancel/rwcancel.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
// Package rwcancel implements cancelable read/write operations on
diff --git a/tai64n/tai64n.go b/tai64n/tai64n.go
index de0f5bf..70c6d60 100644
--- a/tai64n/tai64n.go
+++ b/tai64n/tai64n.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tai64n
diff --git a/tai64n/tai64n_test.go b/tai64n/tai64n_test.go
index 97eb26f..812c1da 100644
--- a/tai64n/tai64n_test.go
+++ b/tai64n/tai64n_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tai64n
diff --git a/tun/alignment_windows_test.go b/tun/alignment_windows_test.go
index b765cca..9ece909 100644
--- a/tun/alignment_windows_test.go
+++ b/tun/alignment_windows_test.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tun
diff --git a/tun/netstack/examples/http_client.go b/tun/netstack/examples/http_client.go
index 352c1e4..ef5efe5 100644
--- a/tun/netstack/examples/http_client.go
+++ b/tun/netstack/examples/http_client.go
@@ -3,7 +3,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package main
diff --git a/tun/netstack/examples/http_server.go b/tun/netstack/examples/http_server.go
index 0fdf4cd..2ffdb35 100644
--- a/tun/netstack/examples/http_server.go
+++ b/tun/netstack/examples/http_server.go
@@ -3,7 +3,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package main
diff --git a/tun/netstack/examples/ping_client.go b/tun/netstack/examples/ping_client.go
index a1bc7f8..f5e649b 100644
--- a/tun/netstack/examples/ping_client.go
+++ b/tun/netstack/examples/ping_client.go
@@ -3,7 +3,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package main
diff --git a/tun/netstack/go.mod b/tun/netstack/go.mod
deleted file mode 100644
index 18aa993..0000000
--- a/tun/netstack/go.mod
+++ /dev/null
@@ -1,17 +0,0 @@
-module golang.zx2c4.com/wireguard/tun/netstack
-
-go 1.18
-
-require (
- golang.org/x/net v0.0.0-20220225172249-27dd8689420f
- golang.zx2c4.com/wireguard v0.0.0-20220316235147-5aff28b14c24
- gvisor.dev/gvisor v0.0.0-20211020211948-f76a604701b6
-)
-
-require (
- github.com/google/btree v1.0.1 // indirect
- golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd // indirect
- golang.org/x/sys v0.0.0-20220315194320-039c03cc5b86 // indirect
- golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
- golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 // indirect
-)
diff --git a/tun/netstack/go.sum b/tun/netstack/go.sum
deleted file mode 100644
index 845c7e0..0000000
--- a/tun/netstack/go.sum
+++ /dev/null
@@ -1,973 +0,0 @@
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-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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-cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
-cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
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-cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
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-honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
-honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-honnef.co/go/tools v0.1.1/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
-k8s.io/api v0.16.13/go.mod h1:QWu8UWSTiuQZMMeYjwLs6ILu5O74qKSJ0c+4vrchDxs=
-k8s.io/apimachinery v0.16.13/go.mod h1:4HMHS3mDHtVttspuuhrJ1GGr/0S9B6iWYWZ57KnnZqQ=
-k8s.io/apimachinery v0.16.14-rc.0/go.mod h1:4HMHS3mDHtVttspuuhrJ1GGr/0S9B6iWYWZ57KnnZqQ=
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-k8s.io/component-base v0.16.13/go.mod h1:cNe9ZU2A6tqBG0gPQ4/T/KolI9Cv2NA1+7uvmkA7Cyc=
-k8s.io/cri-api v0.20.6/go.mod h1:ew44AjNXwyn1s0U4xCKGodU7J1HzBeZ1MpGrpa5r8Yc=
-k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
-k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
-k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
-k8s.io/klog v0.3.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
-k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
-k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
-k8s.io/klog/v2 v2.4.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
-k8s.io/kube-openapi v0.0.0-20200410163147-594e756bea31/go.mod h1:1TqjTSzOxsLGIKfj0lK8EeCP7K1iUG65v09OM0/WG5E=
-k8s.io/kubernetes v1.13.0/go.mod h1:ocZa8+6APFNC2tX1DZASIbocyYT5jHzqFVsY5aoB7Jk=
-k8s.io/utils v0.0.0-20190801114015-581e00157fb1/go.mod h1:sZAwmy6armz5eXlNoLmJcl4F1QuKu7sr+mFQ0byX7Ew=
-k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
-rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
-rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
-rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
-sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
-sigs.k8s.io/structured-merge-diff v0.0.0-20190525122527-15d366b2352e/go.mod h1:wWxsB5ozmmv/SG7nM11ayaAW51xMvak/t1r0CSlcokI=
-sigs.k8s.io/structured-merge-diff/v4 v4.0.3/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
-sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
-sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=
diff --git a/tun/netstack/tun.go b/tun/netstack/tun.go
index c26d8ed..eaa505c 100644
--- a/tun/netstack/tun.go
+++ b/tun/netstack/tun.go
@@ -1,11 +1,12 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2019-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package netstack
import (
+ "bytes"
"context"
"crypto/rand"
"encoding/binary"
@@ -23,10 +24,11 @@ import (
"golang.zx2c4.com/wireguard/tun"
"golang.org/x/net/dns/dnsmessage"
+ "gvisor.dev/gvisor/pkg/bufferv2"
"gvisor.dev/gvisor/pkg/tcpip"
"gvisor.dev/gvisor/pkg/tcpip/adapters/gonet"
- "gvisor.dev/gvisor/pkg/tcpip/buffer"
"gvisor.dev/gvisor/pkg/tcpip/header"
+ "gvisor.dev/gvisor/pkg/tcpip/link/channel"
"gvisor.dev/gvisor/pkg/tcpip/network/ipv4"
"gvisor.dev/gvisor/pkg/tcpip/network/ipv6"
"gvisor.dev/gvisor/pkg/tcpip/stack"
@@ -37,69 +39,16 @@ import (
)
type netTun struct {
+ ep *channel.Endpoint
stack *stack.Stack
- dispatcher stack.NetworkDispatcher
events chan tun.Event
- incomingPacket chan buffer.VectorisedView
+ incomingPacket chan *bufferv2.View
mtu int
dnsServers []netip.Addr
hasV4, hasV6 bool
}
-type (
- endpoint netTun
- Net netTun
-)
-
-func (e *endpoint) Attach(dispatcher stack.NetworkDispatcher) {
- e.dispatcher = dispatcher
-}
-
-func (e *endpoint) IsAttached() bool {
- return e.dispatcher != nil
-}
-
-func (e *endpoint) MTU() uint32 {
- mtu, err := (*netTun)(e).MTU()
- if err != nil {
- panic(err)
- }
- return uint32(mtu)
-}
-
-func (*endpoint) Capabilities() stack.LinkEndpointCapabilities {
- return stack.CapabilityNone
-}
-
-func (*endpoint) MaxHeaderLength() uint16 {
- return 0
-}
-
-func (*endpoint) LinkAddress() tcpip.LinkAddress {
- return ""
-}
-
-func (*endpoint) Wait() {}
-
-func (e *endpoint) WritePacket(_ stack.RouteInfo, _ tcpip.NetworkProtocolNumber, pkt *stack.PacketBuffer) tcpip.Error {
- e.incomingPacket <- buffer.NewVectorisedView(pkt.Size(), pkt.Views())
- return nil
-}
-
-func (e *endpoint) WritePackets(stack.RouteInfo, stack.PacketBufferList, tcpip.NetworkProtocolNumber) (int, tcpip.Error) {
- panic("not implemented")
-}
-
-func (e *endpoint) WriteRawPacket(*stack.PacketBuffer) tcpip.Error {
- panic("not implemented")
-}
-
-func (*endpoint) ARPHardwareType() header.ARPHardwareType {
- return header.ARPHardwareNone
-}
-
-func (e *endpoint) AddHeader(tcpip.LinkAddress, tcpip.LinkAddress, tcpip.NetworkProtocolNumber, *stack.PacketBuffer) {
-}
+type Net netTun
func CreateNetTUN(localAddresses, dnsServers []netip.Addr, mtu int) (tun.Device, *Net, error) {
opts := stack.Options{
@@ -108,13 +57,15 @@ func CreateNetTUN(localAddresses, dnsServers []netip.Addr, mtu int) (tun.Device,
HandleLocal: true,
}
dev := &netTun{
+ ep: channel.New(1024, uint32(mtu), ""),
stack: stack.New(opts),
events: make(chan tun.Event, 10),
- incomingPacket: make(chan buffer.VectorisedView),
+ incomingPacket: make(chan *bufferv2.View),
dnsServers: dnsServers,
mtu: mtu,
}
- tcpipErr := dev.stack.CreateNIC(1, (*endpoint)(dev))
+ dev.ep.AddNotify(dev)
+ tcpipErr := dev.stack.CreateNIC(1, dev.ep)
if tcpipErr != nil {
return nil, nil, fmt.Errorf("CreateNIC: %v", tcpipErr)
}
@@ -167,6 +118,7 @@ func (tun *netTun) Read(buf []byte, offset int) (int, error) {
if !ok {
return 0, os.ErrClosed
}
+
return view.Read(buf[offset:])
}
@@ -176,17 +128,29 @@ func (tun *netTun) Write(buf []byte, offset int) (int, error) {
return 0, nil
}
- pkb := stack.NewPacketBuffer(stack.PacketBufferOptions{Data: buffer.NewVectorisedView(len(packet), []buffer.View{buffer.NewViewFromBytes(packet)})})
+ pkb := stack.NewPacketBuffer(stack.PacketBufferOptions{Payload: bufferv2.MakeWithData(packet)})
switch packet[0] >> 4 {
case 4:
- tun.dispatcher.DeliverNetworkPacket("", "", ipv4.ProtocolNumber, pkb)
+ tun.ep.InjectInbound(header.IPv4ProtocolNumber, pkb)
case 6:
- tun.dispatcher.DeliverNetworkPacket("", "", ipv6.ProtocolNumber, pkb)
+ tun.ep.InjectInbound(header.IPv6ProtocolNumber, pkb)
}
return len(buf), nil
}
+func (tun *netTun) WriteNotify() {
+ pkt := tun.ep.Read()
+ if pkt == nil {
+ return
+ }
+
+ view := pkt.ToView()
+ pkt.DecRef()
+
+ tun.incomingPacket <- view
+}
+
func (tun *netTun) Flush() error {
return nil
}
@@ -197,9 +161,13 @@ func (tun *netTun) Close() error {
if tun.events != nil {
close(tun.events)
}
+
+ tun.ep.Close()
+
if tun.incomingPacket != nil {
close(tun.incomingPacket)
}
+
return nil
}
@@ -434,11 +402,10 @@ func (pc *PingConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
return 0, fmt.Errorf("ping write: mismatched protocols")
}
- buf := buffer.NewViewFromBytes(p)
- rdr := buf.Reader()
+ buf := bytes.NewReader(p)
rfa, _ := convertToFullAddr(netip.AddrPortFrom(na, 0))
// won't block, no deadlines
- n64, tcpipErr := pc.ep.Write(&rdr, tcpip.WriteOptions{
+ n64, tcpipErr := pc.ep.Write(buf, tcpip.WriteOptions{
To: &rfa,
})
if tcpipErr != nil {
@@ -453,8 +420,8 @@ func (pc *PingConn) Write(p []byte) (n int, err error) {
}
func (pc *PingConn) ReadFrom(p []byte) (n int, addr net.Addr, err error) {
- e, notifyCh := waiter.NewChannelEntry(nil)
- pc.wq.EventRegister(&e, waiter.EventIn)
+ e, notifyCh := waiter.NewChannelEntry(waiter.EventIn)
+ pc.wq.EventRegister(&e)
defer pc.wq.EventUnregister(&e)
select {
@@ -488,7 +455,7 @@ func (pc *PingConn) SetDeadline(t time.Time) error {
}
func (pc *PingConn) SetReadDeadline(t time.Time) error {
- pc.deadline.Reset(t.Sub(time.Now()))
+ pc.deadline.Reset(time.Until(t))
return nil
}
diff --git a/tun/operateonfd.go b/tun/operateonfd.go
index 70d8a07..53bbebf 100644
--- a/tun/operateonfd.go
+++ b/tun/operateonfd.go
@@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tun
diff --git a/tun/tun.go b/tun/tun.go
index 5521cb7..1f75f56 100644
--- a/tun/tun.go
+++ b/tun/tun.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tun
diff --git a/tun/tun_darwin.go b/tun/tun_darwin.go
index 94bbfa6..62a8c49 100644
--- a/tun/tun_darwin.go
+++ b/tun/tun_darwin.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tun
@@ -107,7 +107,7 @@ func CreateTUN(name string, mtu int) (Device, error) {
}
}
- fd, err := unix.Socket(unix.AF_SYSTEM, unix.SOCK_DGRAM, 2)
+ fd, err := socketCloexec(unix.AF_SYSTEM, unix.SOCK_DGRAM, 2)
if err != nil {
return nil, err
}
@@ -173,7 +173,7 @@ func CreateTUNFromFile(file *os.File, mtu int) (Device, error) {
return nil, err
}
- tun.routeSocket, err = unix.Socket(unix.AF_ROUTE, unix.SOCK_RAW, unix.AF_UNSPEC)
+ tun.routeSocket, err = socketCloexec(unix.AF_ROUTE, unix.SOCK_RAW, unix.AF_UNSPEC)
if err != nil {
tun.tunFile.Close()
return nil, err
@@ -276,7 +276,7 @@ func (tun *NativeTun) Close() error {
}
func (tun *NativeTun) setMTU(n int) error {
- fd, err := unix.Socket(
+ fd, err := socketCloexec(
unix.AF_INET,
unix.SOCK_DGRAM,
0,
@@ -299,7 +299,7 @@ func (tun *NativeTun) setMTU(n int) error {
}
func (tun *NativeTun) MTU() (int, error) {
- fd, err := unix.Socket(
+ fd, err := socketCloexec(
unix.AF_INET,
unix.SOCK_DGRAM,
0,
@@ -317,3 +317,15 @@ func (tun *NativeTun) MTU() (int, error) {
return int(ifr.MTU), nil
}
+
+func socketCloexec(family, sotype, proto int) (fd int, err error) {
+ // See go/src/net/sys_cloexec.go for background.
+ syscall.ForkLock.RLock()
+ defer syscall.ForkLock.RUnlock()
+
+ fd, err = unix.Socket(family, sotype, proto)
+ if err == nil {
+ unix.CloseOnExec(fd)
+ }
+ return
+}
diff --git a/tun/tun_freebsd.go b/tun/tun_freebsd.go
index dc9eb3e..e8fd87c 100644
--- a/tun/tun_freebsd.go
+++ b/tun/tun_freebsd.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tun
@@ -143,7 +143,7 @@ func tunName(fd uintptr) (string, error) {
// Destroy a named system interface
func tunDestroy(name string) error {
- fd, err := unix.Socket(unix.AF_INET, unix.SOCK_DGRAM, 0)
+ fd, err := unix.Socket(unix.AF_INET, unix.SOCK_DGRAM|unix.SOCK_CLOEXEC, 0)
if err != nil {
return err
}
@@ -170,7 +170,7 @@ func CreateTUN(name string, mtu int) (Device, error) {
return nil, fmt.Errorf("interface %s already exists", name)
}
- tunFile, err := os.OpenFile("/dev/tun", unix.O_RDWR, 0)
+ tunFile, err := os.OpenFile("/dev/tun", unix.O_RDWR|unix.O_CLOEXEC, 0)
if err != nil {
return nil, err
}
@@ -213,7 +213,7 @@ func CreateTUN(name string, mtu int) (Device, error) {
// Disable link-local v6, not just because WireGuard doesn't do that anyway, but
// also because there are serious races with attaching and detaching LLv6 addresses
// in relation to interface lifetime within the FreeBSD kernel.
- confd6, err := unix.Socket(unix.AF_INET6, unix.SOCK_DGRAM, 0)
+ confd6, err := unix.Socket(unix.AF_INET6, unix.SOCK_DGRAM|unix.SOCK_CLOEXEC, 0)
if err != nil {
tunFile.Close()
tunDestroy(assignedName)
@@ -238,7 +238,7 @@ func CreateTUN(name string, mtu int) (Device, error) {
}
if name != "" {
- confd, err := unix.Socket(unix.AF_INET, unix.SOCK_DGRAM, 0)
+ confd, err := unix.Socket(unix.AF_INET, unix.SOCK_DGRAM|unix.SOCK_CLOEXEC, 0)
if err != nil {
tunFile.Close()
tunDestroy(assignedName)
@@ -295,7 +295,7 @@ func CreateTUNFromFile(file *os.File, mtu int) (Device, error) {
return nil, err
}
- tun.routeSocket, err = unix.Socket(unix.AF_ROUTE, unix.SOCK_RAW, unix.AF_UNSPEC)
+ tun.routeSocket, err = unix.Socket(unix.AF_ROUTE, unix.SOCK_RAW|unix.SOCK_CLOEXEC, unix.AF_UNSPEC)
if err != nil {
tun.tunFile.Close()
return nil, err
@@ -397,7 +397,7 @@ func (tun *NativeTun) Close() error {
}
func (tun *NativeTun) setMTU(n int) error {
- fd, err := unix.Socket(unix.AF_INET, unix.SOCK_DGRAM, 0)
+ fd, err := unix.Socket(unix.AF_INET, unix.SOCK_DGRAM|unix.SOCK_CLOEXEC, 0)
if err != nil {
return err
}
@@ -414,7 +414,7 @@ func (tun *NativeTun) setMTU(n int) error {
}
func (tun *NativeTun) MTU() (int, error) {
- fd, err := unix.Socket(unix.AF_INET, unix.SOCK_DGRAM, 0)
+ fd, err := unix.Socket(unix.AF_INET, unix.SOCK_DGRAM|unix.SOCK_CLOEXEC, 0)
if err != nil {
return 0, err
}
diff --git a/tun/tun_linux.go b/tun/tun_linux.go
index fbb8585..f02394d 100644
--- a/tun/tun_linux.go
+++ b/tun/tun_linux.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tun
@@ -99,7 +99,7 @@ func (tun *NativeTun) routineHackListener() {
}
func createNetlinkSocket() (int, error) {
- sock, err := unix.Socket(unix.AF_NETLINK, unix.SOCK_RAW, unix.NETLINK_ROUTE)
+ sock, err := unix.Socket(unix.AF_NETLINK, unix.SOCK_RAW|unix.SOCK_CLOEXEC, unix.NETLINK_ROUTE)
if err != nil {
return -1, err
}
@@ -194,7 +194,7 @@ func (tun *NativeTun) routineNetlinkListener() {
func getIFIndex(name string) (int32, error) {
fd, err := unix.Socket(
unix.AF_INET,
- unix.SOCK_DGRAM,
+ unix.SOCK_DGRAM|unix.SOCK_CLOEXEC,
0,
)
if err != nil {
@@ -228,7 +228,7 @@ func (tun *NativeTun) setMTU(n int) error {
// open datagram socket
fd, err := unix.Socket(
unix.AF_INET,
- unix.SOCK_DGRAM,
+ unix.SOCK_DGRAM|unix.SOCK_CLOEXEC,
0,
)
if err != nil {
@@ -264,7 +264,7 @@ func (tun *NativeTun) MTU() (int, error) {
// open datagram socket
fd, err := unix.Socket(
unix.AF_INET,
- unix.SOCK_DGRAM,
+ unix.SOCK_DGRAM|unix.SOCK_CLOEXEC,
0,
)
if err != nil {
@@ -400,7 +400,7 @@ func (tun *NativeTun) Close() error {
}
func CreateTUN(name string, mtu int) (Device, error) {
- nfd, err := unix.Open(cloneDevicePath, os.O_RDWR, 0)
+ nfd, err := unix.Open(cloneDevicePath, unix.O_RDWR|unix.O_CLOEXEC, 0)
if err != nil {
if os.IsNotExist(err) {
return nil, fmt.Errorf("CreateTUN(%q) failed; %s does not exist", name, cloneDevicePath)
diff --git a/tun/tun_openbsd.go b/tun/tun_openbsd.go
index ff845bc..5c78e4e 100644
--- a/tun/tun_openbsd.go
+++ b/tun/tun_openbsd.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tun
@@ -114,10 +114,10 @@ func CreateTUN(name string, mtu int) (Device, error) {
var err error
if ifIndex != -1 {
- tunfile, err = os.OpenFile(fmt.Sprintf("/dev/tun%d", ifIndex), unix.O_RDWR, 0)
+ tunfile, err = os.OpenFile(fmt.Sprintf("/dev/tun%d", ifIndex), unix.O_RDWR|unix.O_CLOEXEC, 0)
} else {
for ifIndex = 0; ifIndex < 256; ifIndex++ {
- tunfile, err = os.OpenFile(fmt.Sprintf("/dev/tun%d", ifIndex), unix.O_RDWR, 0)
+ tunfile, err = os.OpenFile(fmt.Sprintf("/dev/tun%d", ifIndex), unix.O_RDWR|unix.O_CLOEXEC, 0)
if err == nil || !errors.Is(err, syscall.EBUSY) {
break
}
@@ -165,7 +165,7 @@ func CreateTUNFromFile(file *os.File, mtu int) (Device, error) {
return nil, err
}
- tun.routeSocket, err = unix.Socket(unix.AF_ROUTE, unix.SOCK_RAW, unix.AF_UNSPEC)
+ tun.routeSocket, err = unix.Socket(unix.AF_ROUTE, unix.SOCK_RAW|unix.SOCK_CLOEXEC, unix.AF_UNSPEC)
if err != nil {
tun.tunFile.Close()
return nil, err
@@ -270,7 +270,7 @@ func (tun *NativeTun) setMTU(n int) error {
fd, err := unix.Socket(
unix.AF_INET,
- unix.SOCK_DGRAM,
+ unix.SOCK_DGRAM|unix.SOCK_CLOEXEC,
0,
)
if err != nil {
@@ -304,7 +304,7 @@ func (tun *NativeTun) MTU() (int, error) {
fd, err := unix.Socket(
unix.AF_INET,
- unix.SOCK_DGRAM,
+ unix.SOCK_DGRAM|unix.SOCK_CLOEXEC,
0,
)
if err != nil {
diff --git a/tun/tun_windows.go b/tun/tun_windows.go
index d057150..9e8bfbf 100644
--- a/tun/tun_windows.go
+++ b/tun/tun_windows.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2018-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tun
@@ -26,10 +26,10 @@ const (
)
type rateJuggler struct {
- current uint64
- nextByteCount uint64
- nextStartTime int64
- changing int32
+ current atomic.Uint64
+ nextByteCount atomic.Uint64
+ nextStartTime atomic.Int64
+ changing atomic.Bool
}
type NativeTun struct {
@@ -42,7 +42,7 @@ type NativeTun struct {
events chan Event
running sync.WaitGroup
closeOnce sync.Once
- close int32
+ close atomic.Bool
forcedMTU int
}
@@ -57,18 +57,14 @@ func procyield(cycles uint32)
//go:linkname nanotime runtime.nanotime
func nanotime() int64
-//
// CreateTUN creates a Wintun interface with the given name. Should a Wintun
// interface with the same name exist, it is reused.
-//
func CreateTUN(ifname string, mtu int) (Device, error) {
return CreateTUNWithRequestedGUID(ifname, WintunStaticRequestedGUID, mtu)
}
-//
// CreateTUNWithRequestedGUID creates a Wintun interface with the given name and
// a requested GUID. Should a Wintun interface with the same name exist, it is reused.
-//
func CreateTUNWithRequestedGUID(ifname string, requestedGUID *windows.GUID, mtu int) (Device, error) {
wt, err := wintun.CreateAdapter(ifname, WintunTunnelType, requestedGUID)
if err != nil {
@@ -113,7 +109,7 @@ func (tun *NativeTun) Events() chan Event {
func (tun *NativeTun) Close() error {
var err error
tun.closeOnce.Do(func() {
- atomic.StoreInt32(&tun.close, 1)
+ tun.close.Store(true)
windows.SetEvent(tun.readWait)
tun.running.Wait()
tun.session.End()
@@ -144,13 +140,13 @@ func (tun *NativeTun) Read(buff []byte, offset int) (int, error) {
tun.running.Add(1)
defer tun.running.Done()
retry:
- if atomic.LoadInt32(&tun.close) == 1 {
+ if tun.close.Load() {
return 0, os.ErrClosed
}
start := nanotime()
- shouldSpin := atomic.LoadUint64(&tun.rate.current) >= spinloopRateThreshold && uint64(start-atomic.LoadInt64(&tun.rate.nextStartTime)) <= rateMeasurementGranularity*2
+ shouldSpin := tun.rate.current.Load() >= spinloopRateThreshold && uint64(start-tun.rate.nextStartTime.Load()) <= rateMeasurementGranularity*2
for {
- if atomic.LoadInt32(&tun.close) == 1 {
+ if tun.close.Load() {
return 0, os.ErrClosed
}
packet, err := tun.session.ReceivePacket()
@@ -184,7 +180,7 @@ func (tun *NativeTun) Flush() error {
func (tun *NativeTun) Write(buff []byte, offset int) (int, error) {
tun.running.Add(1)
defer tun.running.Done()
- if atomic.LoadInt32(&tun.close) == 1 {
+ if tun.close.Load() {
return 0, os.ErrClosed
}
@@ -210,7 +206,7 @@ func (tun *NativeTun) Write(buff []byte, offset int) (int, error) {
func (tun *NativeTun) LUID() uint64 {
tun.running.Add(1)
defer tun.running.Done()
- if atomic.LoadInt32(&tun.close) == 1 {
+ if tun.close.Load() {
return 0
}
return tun.wt.LUID()
@@ -223,15 +219,15 @@ func (tun *NativeTun) RunningVersion() (version uint32, err error) {
func (rate *rateJuggler) update(packetLen uint64) {
now := nanotime()
- total := atomic.AddUint64(&rate.nextByteCount, packetLen)
- period := uint64(now - atomic.LoadInt64(&rate.nextStartTime))
+ total := rate.nextByteCount.Add(packetLen)
+ period := uint64(now - rate.nextStartTime.Load())
if period >= rateMeasurementGranularity {
- if !atomic.CompareAndSwapInt32(&rate.changing, 0, 1) {
+ if !rate.changing.CompareAndSwap(false, true) {
return
}
- atomic.StoreInt64(&rate.nextStartTime, now)
- atomic.StoreUint64(&rate.current, total*uint64(time.Second/time.Nanosecond)/period)
- atomic.StoreUint64(&rate.nextByteCount, 0)
- atomic.StoreInt32(&rate.changing, 0)
+ rate.nextStartTime.Store(now)
+ rate.current.Store(total * uint64(time.Second/time.Nanosecond) / period)
+ rate.nextByteCount.Store(0)
+ rate.changing.Store(false)
}
}
diff --git a/tun/tuntest/tuntest.go b/tun/tuntest/tuntest.go
index 8196c34..e9971d1 100644
--- a/tun/tuntest/tuntest.go
+++ b/tun/tuntest/tuntest.go
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
- * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2017-2022 WireGuard LLC. All Rights Reserved.
*/
package tuntest