void/amneziawg-go
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Revert "Merge pull request #78 from jmwample/jmwample/upstream"

Browse source 
This reverts commit fe75b639fa, reversing
changes made to 27e661d68e.
This commit is contained in:
Mark Puha 2025-07-02 06:26:28 +02:00
parent 64581fe1e3
commit 69ca16c4fb
94 changed files with 245 additions and 422 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
README.md
View file

@ -50,4 +50,3 @@ $ git clone https://github.com/amnezia-vpn/amneziawg-go
$ cd amneziawg-go
$ make
```

2
conn/bind_std.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/bind_windows.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/bindtest/bindtest.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package bindtest

2
conn/boundif_android.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/conn.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
// Package conn implements WireGuard's network connections.

2
conn/conn_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/controlfns.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

50
conn/controlfns_linux.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn
@ -13,35 +13,6 @@ import (
"golang.org/x/sys/unix"
)
// Taken from go/src/internal/syscall/unix/kernel_version_linux.go
func kernelVersion() (major, minor int) {
var uname unix.Utsname
if err := unix.Uname(&uname); err != nil {
return
}
var (
values [2]int
value, vi int
)
for _, c := range uname.Release {
if '0' <= c && c <= '9' {
value = (value * 10) + int(c-'0')
} else {
// Note that we're assuming N.N.N here.
// If we see anything else, we are likely to mis-parse it.
values[vi] = value
vi++
if vi >= len(values) {
break
}
value = 0
}
}
return values[0], values[1]
}
func init() {
controlFns = append(controlFns,
@ -86,24 +57,5 @@ func init() {
}
return err
},
// Attempt to enable UDP_GRO
func(network, address string, c syscall.RawConn) error {
// Kernels below 5.12 are missing 98184612aca0 ("net:
// udp: Add support for getsockopt(..., ..., UDP_GRO,
// ..., ...);"), which means we can't read this back
// later. We could pipe the return value through to
// the rest of the code, but UDP_GRO is kind of buggy
// anyway, so just gate this here.
major, minor := kernelVersion()
if major < 5 || (major == 5 && minor < 12) {
return nil
}
c.Control(func(fd uintptr) {
_ = unix.SetsockoptInt(int(fd), unix.IPPROTO_UDP, unix.UDP_GRO, 1)
})
return nil
},
)
}

2
conn/controlfns_unix.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/controlfns_windows.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/default.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

4
conn/errors_default.go
View file

@ -2,11 +2,11 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn
func errShouldDisableUDPGSO(_ error) bool {
func errShouldDisableUDPGSO(err error) bool {
return false
}

2
conn/errors_linux.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

4
conn/features_default.go
View file

@ -3,13 +3,13 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn
import "net"
func supportsUDPOffload(_ *net.UDPConn) (txOffload, rxOffload bool) {
func supportsUDPOffload(conn *net.UDPConn) (txOffload, rxOffload bool) {
return
}

2
conn/features_linux.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/gso_default.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/gso_linux.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/mark_default.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/mark_unix.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/sticky_default.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/sticky_linux.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/sticky_linux_test.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package conn

2
conn/winrio/rio_windows.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package winrio

89
device/allowedips.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device
@ -223,60 +223,6 @@ func (table *AllowedIPs) EntriesForPeer(peer *Peer, cb func(prefix netip.Prefix)
}
}
func (node *trieEntry) remove() {
node.removeFromPeerEntries()
node.peer = nil
if node.child[0] != nil && node.child[1] != nil {
return
}
bit := 0
if node.child[0] == nil {
bit = 1
}
child := node.child[bit]
if child != nil {
child.parent = node.parent
}
*node.parent.parentBit = child
if node.child[0] != nil || node.child[1] != nil || node.parent.parentBitType > 1 {
node.zeroizePointers()
return
}
parent := (*trieEntry)(unsafe.Pointer(uintptr(unsafe.Pointer(node.parent.parentBit)) - unsafe.Offsetof(node.child) - unsafe.Sizeof(node.child[0])*uintptr(node.parent.parentBitType)))
if parent.peer != nil {
node.zeroizePointers()
return
}
child = parent.child[node.parent.parentBitType^1]
if child != nil {
child.parent = parent.parent
}
*parent.parent.parentBit = child
node.zeroizePointers()
parent.zeroizePointers()
}
func (table *AllowedIPs) Remove(prefix netip.Prefix, peer *Peer) {
table.mutex.Lock()
defer table.mutex.Unlock()
var node *trieEntry
var exact bool
if prefix.Addr().Is6() {
ip := prefix.Addr().As16()
node, exact = table.IPv6.nodePlacement(ip[:], uint8(prefix.Bits()))
} else if prefix.Addr().Is4() {
ip := prefix.Addr().As4()
node, exact = table.IPv4.nodePlacement(ip[:], uint8(prefix.Bits()))
} else {
panic(errors.New("removing unknown address type"))
}
if !exact || node == nil || peer != node.peer {
return
}
node.remove()
}
func (table *AllowedIPs) RemoveByPeer(peer *Peer) {
table.mutex.Lock()
defer table.mutex.Unlock()
@ -284,7 +230,38 @@ func (table *AllowedIPs) RemoveByPeer(peer *Peer) {
var next *list.Element
for elem := peer.trieEntries.Front(); elem != nil; elem = next {
next = elem.Next()
elem.Value.(*trieEntry).remove()
node := elem.Value.(*trieEntry)
node.removeFromPeerEntries()
node.peer = nil
if node.child[0] != nil && node.child[1] != nil {
continue
}
bit := 0
if node.child[0] == nil {
bit = 1
}
child := node.child[bit]
if child != nil {
child.parent = node.parent
}
*node.parent.parentBit = child
if node.child[0] != nil || node.child[1] != nil || node.parent.parentBitType > 1 {
node.zeroizePointers()
continue
}
parent := (*trieEntry)(unsafe.Pointer(uintptr(unsafe.Pointer(node.parent.parentBit)) - unsafe.Offsetof(node.child) - unsafe.Sizeof(node.child[0])*uintptr(node.parent.parentBitType)))
if parent.peer != nil {
node.zeroizePointers()
continue
}
child = parent.child[node.parent.parentBitType^1]
if child != nil {
child.parent = parent.parent
}
*parent.parent.parentBit = child
node.zeroizePointers()
parent.zeroizePointers()
}
}

12
device/allowedips_rand_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device
@ -83,7 +83,7 @@ func TestTrieRandom(t *testing.T) {
var peers []*Peer
var allowedIPs AllowedIPs
rng := rand.New(rand.NewSource(1))
rand.Seed(1)
for n := 0; n < NumberOfPeers; n++ {
peers = append(peers, &Peer{})
@ -91,14 +91,14 @@ func TestTrieRandom(t *testing.T) {
for n := 0; n < NumberOfAddresses; n++ {
var addr4 [4]byte
rng.Read(addr4[:])
rand.Read(addr4[:])
cidr := uint8(rand.Intn(32) + 1)
index := rand.Intn(NumberOfPeers)
allowedIPs.Insert(netip.PrefixFrom(netip.AddrFrom4(addr4), int(cidr)), peers[index])
slow4 = slow4.Insert(addr4[:], cidr, peers[index])
var addr6 [16]byte
rng.Read(addr6[:])
rand.Read(addr6[:])
cidr = uint8(rand.Intn(128) + 1)
index = rand.Intn(NumberOfPeers)
allowedIPs.Insert(netip.PrefixFrom(netip.AddrFrom16(addr6), int(cidr)), peers[index])
@ -109,7 +109,7 @@ func TestTrieRandom(t *testing.T) {
for p = 0; ; p++ {
for n := 0; n < NumberOfTests; n++ {
var addr4 [4]byte
rng.Read(addr4[:])
rand.Read(addr4[:])
peer1 := slow4.Lookup(addr4[:])
peer2 := allowedIPs.Lookup(addr4[:])
if peer1 != peer2 {
@ -117,7 +117,7 @@ func TestTrieRandom(t *testing.T) {
}
var addr6 [16]byte
rng.Read(addr6[:])
rand.Read(addr6[:])
peer1 = slow6.Lookup(addr6[:])
peer2 = allowedIPs.Lookup(addr6[:])
if peer1 != peer2 {

71
device/allowedips_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device
@ -39,12 +39,12 @@ func TestCommonBits(t *testing.T) {
}
}
func benchmarkTrie(peerNumber, addressNumber, _ int, b *testing.B) {
func benchmarkTrie(peerNumber, addressNumber, addressLength int, b *testing.B) {
var trie *trieEntry
var peers []*Peer
root := parentIndirection{&trie, 2}
rng := rand.New(rand.NewSource(1))
rand.Seed(1)
const AddressLength = 4
@ -54,15 +54,15 @@ func benchmarkTrie(peerNumber, addressNumber, _ int, b *testing.B) {
for n := 0; n < addressNumber; n++ {
var addr [AddressLength]byte
rng.Read(addr[:])
cidr := uint8(rng.Uint32() % (AddressLength * 8))
index := rng.Int() % peerNumber
rand.Read(addr[:])
cidr := uint8(rand.Uint32() % (AddressLength * 8))
index := rand.Int() % peerNumber
root.insert(addr[:], cidr, peers[index])
}
for n := 0; n < b.N; n++ {
var addr [AddressLength]byte
rng.Read(addr[:])
rand.Read(addr[:])
trie.lookup(addr[:])
}
}
@ -101,10 +101,6 @@ func TestTrieIPv4(t *testing.T) {
allowedIPs.Insert(netip.PrefixFrom(netip.AddrFrom4([4]byte{a, b, c, d}), int(cidr)), peer)
}
remove := func(peer *Peer, a, b, c, d byte, cidr uint8) {
allowedIPs.Remove(netip.PrefixFrom(netip.AddrFrom4([4]byte{a, b, c, d}), int(cidr)), peer)
}
assertEQ := func(peer *Peer, a, b, c, d byte) {
p := allowedIPs.Lookup([]byte{a, b, c, d})
if p != peer {
@ -180,21 +176,6 @@ func TestTrieIPv4(t *testing.T) {
allowedIPs.RemoveByPeer(a)
assertNEQ(a, 192, 168, 0, 1)
insert(a, 1, 0, 0, 0, 32)
insert(a, 192, 0, 0, 0, 24)
assertEQ(a, 1, 0, 0, 0)
assertEQ(a, 192, 0, 0, 1)
remove(a, 192, 0, 0, 0, 32)
assertEQ(a, 192, 0, 0, 1)
remove(nil, 192, 0, 0, 0, 24)
assertEQ(a, 192, 0, 0, 1)
remove(b, 192, 0, 0, 0, 24)
assertEQ(a, 192, 0, 0, 1)
remove(a, 192, 0, 0, 0, 24)
assertNEQ(a, 192, 0, 0, 1)
remove(a, 1, 0, 0, 0, 32)
assertNEQ(a, 1, 0, 0, 0)
}
/* Test ported from kernel implementation:
@ -230,15 +211,6 @@ func TestTrieIPv6(t *testing.T) {
allowedIPs.Insert(netip.PrefixFrom(netip.AddrFrom16(*(*[16]byte)(addr)), int(cidr)), peer)
}
remove := func(peer *Peer, a, b, c, d uint32, cidr uint8) {
var addr []byte
addr = append(addr, expand(a)...)
addr = append(addr, expand(b)...)
addr = append(addr, expand(c)...)
addr = append(addr, expand(d)...)
allowedIPs.Remove(netip.PrefixFrom(netip.AddrFrom16(*(*[16]byte)(addr)), int(cidr)), peer)
}
assertEQ := func(peer *Peer, a, b, c, d uint32) {
var addr []byte
addr = append(addr, expand(a)...)
@ -251,18 +223,6 @@ func TestTrieIPv6(t *testing.T) {
}
}
assertNEQ := func(peer *Peer, a, b, c, d uint32) {
var addr []byte
addr = append(addr, expand(a)...)
addr = append(addr, expand(b)...)
addr = append(addr, expand(c)...)
addr = append(addr, expand(d)...)
p := allowedIPs.Lookup(addr)
if p == peer {
t.Error("Assert NEQ failed")
}
}
insert(d, 0x26075300, 0x60006b00, 0, 0xc05f0543, 128)
insert(c, 0x26075300, 0x60006b00, 0, 0, 64)
insert(e, 0, 0, 0, 0, 0)
@ -284,21 +244,4 @@ func TestTrieIPv6(t *testing.T) {
assertEQ(h, 0x24046800, 0x40040800, 0, 0)
assertEQ(h, 0x24046800, 0x40040800, 0x10101010, 0x10101010)
assertEQ(a, 0x24046800, 0x40040800, 0xdeadbeef, 0xdeadbeef)
insert(a, 0x24446801, 0x40e40800, 0xdeaebeef, 0xdefbeef, 128)
insert(a, 0x24446800, 0xf0e40800, 0xeeaebeef, 0, 98)
assertEQ(a, 0x24446801, 0x40e40800, 0xdeaebeef, 0xdefbeef)
assertEQ(a, 0x24446800, 0xf0e40800, 0xeeaebeef, 0x10101010)
remove(a, 0x24446801, 0x40e40800, 0xdeaebeef, 0xdefbeef, 96)
assertEQ(a, 0x24446801, 0x40e40800, 0xdeaebeef, 0xdefbeef)
remove(nil, 0x24446801, 0x40e40800, 0xdeaebeef, 0xdefbeef, 128)
assertEQ(a, 0x24446801, 0x40e40800, 0xdeaebeef, 0xdefbeef)
remove(b, 0x24446801, 0x40e40800, 0xdeaebeef, 0xdefbeef, 128)
assertEQ(a, 0x24446801, 0x40e40800, 0xdeaebeef, 0xdefbeef)
remove(a, 0x24446801, 0x40e40800, 0xdeaebeef, 0xdefbeef, 128)
assertNEQ(a, 0x24446801, 0x40e40800, 0xdeaebeef, 0xdefbeef)
remove(b, 0x24446800, 0xf0e40800, 0xeeaebeef, 0, 98)
assertEQ(a, 0x24446800, 0xf0e40800, 0xeeaebeef, 0x10101010)
remove(a, 0x24446800, 0xf0e40800, 0xeeaebeef, 0, 98)
assertNEQ(a, 0x24446800, 0xf0e40800, 0xeeaebeef, 0x10101010)
}

2
device/bind_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/channels.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/constants.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/cookie.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/cookie_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/device.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/device_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/endpoint_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/indextable.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/ip.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/kdf_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/keypair.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/logger.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/mobilequirks.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/noise-helpers.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/noise-protocol.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/noise-types.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/noise_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/peer.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

13
device/pools.go
View file

@ -1,19 +1,20 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device
import (
"sync"
"sync/atomic"
)
type WaitPool struct {
pool sync.Pool
cond sync.Cond
lock sync.Mutex
count uint32 // Get calls not yet Put back
count atomic.Uint32
max uint32
}
@ -26,10 +27,10 @@ func NewWaitPool(max uint32, new func() any) *WaitPool {
func (p *WaitPool) Get() any {
if p.max != 0 {
p.lock.Lock()
for p.count >= p.max {
for p.count.Load() >= p.max {
p.cond.Wait()
}
p.count++
p.count.Add(1)
p.lock.Unlock()
}
return p.pool.Get()
@ -40,9 +41,7 @@ func (p *WaitPool) Put(x any) {
if p.max == 0 {
return
}
p.lock.Lock()
defer p.lock.Unlock()
p.count--
p.count.Add(^uint32(0))
p.cond.Signal()
}

6
device/pools_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device
@ -32,9 +32,7 @@ func TestWaitPool(t *testing.T) {
wg.Add(workers)
var max atomic.Uint32
updateMax := func() {
p.lock.Lock()
count := p.count
p.lock.Unlock()
count := p.count.Load()
if count > p.max {
t.Errorf("count (%d) > max (%d)", count, p.max)
}

2
device/queueconstants_android.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/queueconstants_default.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/queueconstants_ios.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/queueconstants_windows.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/race_disabled_test.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/race_enabled_test.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

2
device/receive.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

3
device/send.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device
@ -586,7 +586,6 @@ func (peer *Peer) RoutineSequentialSender(maxBatchSize int) {
device.PutMessageBuffer(elem.buffer)
device.PutOutboundElement(elem)
}
device.PutOutboundElementsContainer(elemsContainer)
continue
}
dataSent := false

2
device/sticky_default.go
View file

@ -7,6 +7,6 @@ import (
"github.com/amnezia-vpn/amneziawg-go/rwcancel"
)
func (device *Device) startRouteListener(_ conn.Bind) (*rwcancel.RWCancel, error) {
func (device *Device) startRouteListener(bind conn.Bind) (*rwcancel.RWCancel, error) {
return nil, nil
}

6
device/sticky_linux.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 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
@ -9,7 +9,7 @@
*
* Currently there is no way to achieve this within the net package:
* See e.g. https://github.com/golang/go/issues/17930
* So this code remains platform dependent.
* So this code is remains platform dependent.
*/
package device
@ -47,7 +47,7 @@ func (device *Device) startRouteListener(bind conn.Bind) (*rwcancel.RWCancel, er
return netlinkCancel, nil
}
func (device *Device) routineRouteListener(_ conn.Bind, netlinkSock int, netlinkCancel *rwcancel.RWCancel) {
func (device *Device) routineRouteListener(bind conn.Bind, netlinkSock int, netlinkCancel *rwcancel.RWCancel) {
type peerEndpointPtr struct {
peer *Peer
endpoint *conn.Endpoint

2
device/timers.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*
* This is based heavily on timers.c from the kernel implementation.
*/

2
device/tun.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device

17
device/uapi.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package device
@ -561,14 +561,7 @@ func (device *Device) handlePeerLine(
device.allowedips.RemoveByPeer(peer.Peer)
case "allowed_ip":
add := true
verb := "Adding"
if len(value) > 0 && value[0] == '-' {
add = false
verb = "Removing"
value = value[1:]
}
device.log.Verbosef("%v - UAPI: %s allowedip", peer.Peer, verb)
device.log.Verbosef("%v - UAPI: Adding allowedip", peer.Peer)
prefix, err := netip.ParsePrefix(value)
if err != nil {
return ipcErrorf(ipc.IpcErrorInvalid, "failed to set allowed ip: %w", err)
@ -576,11 +569,7 @@ func (device *Device) handlePeerLine(
if peer.dummy {
return nil
}
if add {
device.allowedips.Insert(prefix, peer.Peer)
} else {
device.allowedips.Remove(prefix, peer.Peer)
}
device.allowedips.Insert(prefix, peer.Peer)
case "protocol_version":
if value != "1" {

2
format_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package main

2
ipc/uapi_bsd.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package ipc

2
ipc/uapi_linux.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package ipc

2
ipc/uapi_unix.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package ipc

2
ipc/uapi_wasm.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package ipc

2
ipc/uapi_windows.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package ipc

2
main.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package main

2
main_windows.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package main

2
ratelimiter/ratelimiter.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package ratelimiter

2
ratelimiter/ratelimiter_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package ratelimiter

2
replay/replay.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
// Package replay implements an efficient anti-replay algorithm as specified in RFC 6479.

2
replay/replay_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package replay

4
rwcancel/rwcancel.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
// Package rwcancel implements cancelable read/write operations on
@ -64,7 +64,7 @@ func (rw *RWCancel) ReadyRead() bool {
func (rw *RWCancel) ReadyWrite() bool {
closeFd := int32(rw.closingReader.Fd())
pollFds := []unix.PollFd{{Fd: int32(rw.fd), Events: unix.POLLOUT}, {Fd: closeFd, Events: unix.POLLIN}}
pollFds := []unix.PollFd{{Fd: int32(rw.fd), Events: unix.POLLOUT}, {Fd: closeFd, Events: unix.POLLOUT}}
var err error
for {
_, err = unix.Poll(pollFds, -1)

2
tai64n/tai64n.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tai64n

2
tai64n/tai64n_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tai64n

2
tun/alignment_windows_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tun

122
tun/checksum.go
View file

@ -1,86 +1,102 @@
package tun
import (
"encoding/binary"
"math/bits"
)
import "encoding/binary"
// TODO: Explore SIMD and/or other assembly optimizations.
// TODO: Test native endian loads. See RFC 1071 section 2 part B.
func checksumNoFold(b []byte, initial uint64) uint64 {
tmp := make([]byte, 8)
binary.NativeEndian.PutUint64(tmp, initial)
ac := binary.BigEndian.Uint64(tmp)
var carry uint64
ac := initial
for len(b) >= 128 {
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[:8]), 0)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[8:16]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[16:24]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[24:32]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[32:40]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[40:48]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[48:56]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[56:64]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[64:72]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[72:80]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[80:88]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[88:96]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[96:104]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[104:112]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[112:120]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[120:128]), carry)
ac += carry
ac += uint64(binary.BigEndian.Uint32(b[:4]))
ac += uint64(binary.BigEndian.Uint32(b[4:8]))
ac += uint64(binary.BigEndian.Uint32(b[8:12]))
ac += uint64(binary.BigEndian.Uint32(b[12:16]))
ac += uint64(binary.BigEndian.Uint32(b[16:20]))
ac += uint64(binary.BigEndian.Uint32(b[20:24]))
ac += uint64(binary.BigEndian.Uint32(b[24:28]))
ac += uint64(binary.BigEndian.Uint32(b[28:32]))
ac += uint64(binary.BigEndian.Uint32(b[32:36]))
ac += uint64(binary.BigEndian.Uint32(b[36:40]))
ac += uint64(binary.BigEndian.Uint32(b[40:44]))
ac += uint64(binary.BigEndian.Uint32(b[44:48]))
ac += uint64(binary.BigEndian.Uint32(b[48:52]))
ac += uint64(binary.BigEndian.Uint32(b[52:56]))
ac += uint64(binary.BigEndian.Uint32(b[56:60]))
ac += uint64(binary.BigEndian.Uint32(b[60:64]))
ac += uint64(binary.BigEndian.Uint32(b[64:68]))
ac += uint64(binary.BigEndian.Uint32(b[68:72]))
ac += uint64(binary.BigEndian.Uint32(b[72:76]))
ac += uint64(binary.BigEndian.Uint32(b[76:80]))
ac += uint64(binary.BigEndian.Uint32(b[80:84]))
ac += uint64(binary.BigEndian.Uint32(b[84:88]))
ac += uint64(binary.BigEndian.Uint32(b[88:92]))
ac += uint64(binary.BigEndian.Uint32(b[92:96]))
ac += uint64(binary.BigEndian.Uint32(b[96:100]))
ac += uint64(binary.BigEndian.Uint32(b[100:104]))
ac += uint64(binary.BigEndian.Uint32(b[104:108]))
ac += uint64(binary.BigEndian.Uint32(b[108:112]))
ac += uint64(binary.BigEndian.Uint32(b[112:116]))
ac += uint64(binary.BigEndian.Uint32(b[116:120]))
ac += uint64(binary.BigEndian.Uint32(b[120:124]))
ac += uint64(binary.BigEndian.Uint32(b[124:128]))
b = b[128:]
}
if len(b) >= 64 {
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[:8]), 0)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[8:16]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[16:24]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[24:32]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[32:40]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[40:48]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[48:56]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[56:64]), carry)
ac += carry
ac += uint64(binary.BigEndian.Uint32(b[:4]))
ac += uint64(binary.BigEndian.Uint32(b[4:8]))
ac += uint64(binary.BigEndian.Uint32(b[8:12]))
ac += uint64(binary.BigEndian.Uint32(b[12:16]))
ac += uint64(binary.BigEndian.Uint32(b[16:20]))
ac += uint64(binary.BigEndian.Uint32(b[20:24]))
ac += uint64(binary.BigEndian.Uint32(b[24:28]))
ac += uint64(binary.BigEndian.Uint32(b[28:32]))
ac += uint64(binary.BigEndian.Uint32(b[32:36]))
ac += uint64(binary.BigEndian.Uint32(b[36:40]))
ac += uint64(binary.BigEndian.Uint32(b[40:44]))
ac += uint64(binary.BigEndian.Uint32(b[44:48]))
ac += uint64(binary.BigEndian.Uint32(b[48:52]))
ac += uint64(binary.BigEndian.Uint32(b[52:56]))
ac += uint64(binary.BigEndian.Uint32(b[56:60]))
ac += uint64(binary.BigEndian.Uint32(b[60:64]))
b = b[64:]
}
if len(b) >= 32 {
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[:8]), 0)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[8:16]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[16:24]), carry)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[24:32]), carry)
ac += carry
ac += uint64(binary.BigEndian.Uint32(b[:4]))
ac += uint64(binary.BigEndian.Uint32(b[4:8]))
ac += uint64(binary.BigEndian.Uint32(b[8:12]))
ac += uint64(binary.BigEndian.Uint32(b[12:16]))
ac += uint64(binary.BigEndian.Uint32(b[16:20]))
ac += uint64(binary.BigEndian.Uint32(b[20:24]))
ac += uint64(binary.BigEndian.Uint32(b[24:28]))
ac += uint64(binary.BigEndian.Uint32(b[28:32]))
b = b[32:]
}
if len(b) >= 16 {
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[:8]), 0)
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[8:16]), carry)
ac += carry
ac += uint64(binary.BigEndian.Uint32(b[:4]))
ac += uint64(binary.BigEndian.Uint32(b[4:8]))
ac += uint64(binary.BigEndian.Uint32(b[8:12]))
ac += uint64(binary.BigEndian.Uint32(b[12:16]))
b = b[16:]
}
if len(b) >= 8 {
ac, carry = bits.Add64(ac, binary.NativeEndian.Uint64(b[:8]), 0)
ac += carry
ac += uint64(binary.BigEndian.Uint32(b[:4]))
ac += uint64(binary.BigEndian.Uint32(b[4:8]))
b = b[8:]
}
if len(b) >= 4 {
ac, carry = bits.Add64(ac, uint64(binary.NativeEndian.Uint32(b[:4])), 0)
ac += carry
ac += uint64(binary.BigEndian.Uint32(b))
b = b[4:]
}
if len(b) >= 2 {
ac, carry = bits.Add64(ac, uint64(binary.NativeEndian.Uint16(b[:2])), 0)
ac += carry
ac += uint64(binary.BigEndian.Uint16(b))
b = b[2:]
}
if len(b) == 1 {
tmp := binary.NativeEndian.Uint16([]byte{b[0], 0})
ac, carry = bits.Add64(ac, uint64(tmp), 0)
ac += carry
ac += uint64(b[0]) << 8
}
binary.NativeEndian.PutUint64(tmp, ac)
return binary.BigEndian.Uint64(tmp)
return ac
}
func checksum(b []byte, initial uint64) uint16 {

63
tun/checksum_test.go
View file

@ -1,74 +1,11 @@
package tun
import (
"encoding/binary"
"fmt"
"math/rand"
"testing"
"golang.org/x/sys/unix"
)
func checksumRef(b []byte, initial uint16) uint16 {
ac := uint64(initial)
for len(b) >= 2 {
ac += uint64(binary.BigEndian.Uint16(b))
b = b[2:]
}
if len(b) == 1 {
ac += uint64(b[0]) << 8
}
for (ac >> 16) > 0 {
ac = (ac >> 16) + (ac & 0xffff)
}
return uint16(ac)
}
func pseudoHeaderChecksumRefNoFold(protocol uint8, srcAddr, dstAddr []byte, totalLen uint16) uint16 {
sum := checksumRef(srcAddr, 0)
sum = checksumRef(dstAddr, sum)
sum = checksumRef([]byte{0, protocol}, sum)
tmp := make([]byte, 2)
binary.BigEndian.PutUint16(tmp, totalLen)
return checksumRef(tmp, sum)
}
func TestChecksum(t *testing.T) {
for length := 0; length <= 9001; length++ {
buf := make([]byte, length)
rng := rand.New(rand.NewSource(1))
rng.Read(buf)
csum := checksum(buf, 0x1234)
csumRef := checksumRef(buf, 0x1234)
if csum != csumRef {
t.Error("Expected checksum", csumRef, "got", csum)
}
}
}
func TestPseudoHeaderChecksum(t *testing.T) {
for _, addrLen := range []int{4, 16} {
for length := 0; length <= 9001; length++ {
srcAddr := make([]byte, addrLen)
dstAddr := make([]byte, addrLen)
buf := make([]byte, length)
rng := rand.New(rand.NewSource(1))
rng.Read(srcAddr)
rng.Read(dstAddr)
rng.Read(buf)
phSum := pseudoHeaderChecksumNoFold(unix.IPPROTO_TCP, srcAddr, dstAddr, uint16(length))
csum := checksum(buf, phSum)
phSumRef := pseudoHeaderChecksumRefNoFold(unix.IPPROTO_TCP, srcAddr, dstAddr, uint16(length))
csumRef := checksumRef(buf, phSumRef)
if csum != csumRef {
t.Error("Expected checksumRef", csumRef, "got", csum)
}
}
}
}
func BenchmarkChecksum(b *testing.B) {
lengths := []int{
64,

2
tun/netstack/examples/http_client.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package main

2
tun/netstack/examples/http_server.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package main

2
tun/netstack/examples/ping_client.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package main

12
tun/netstack/tun.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package netstack
@ -43,7 +43,6 @@ type netTun struct {
ep *channel.Endpoint
stack *stack.Stack
events chan tun.Event
notifyHandle *channel.NotificationHandle
incomingPacket chan *buffer.View
mtu int
dnsServers []netip.Addr
@ -71,7 +70,7 @@ func CreateNetTUN(localAddresses, dnsServers []netip.Addr, mtu int) (tun.Device,
if tcpipErr != nil {
return nil, nil, fmt.Errorf("could not enable TCP SACK: %v", tcpipErr)
}
dev.notifyHandle = dev.ep.AddNotify(dev)
dev.ep.AddNotify(dev)
tcpipErr = dev.stack.CreateNIC(1, dev.ep)
if tcpipErr != nil {
return nil, nil, fmt.Errorf("CreateNIC: %v", tcpipErr)
@ -156,7 +155,7 @@ func (tun *netTun) Write(buf [][]byte, offset int) (int, error) {
func (tun *netTun) WriteNotify() {
pkt := tun.ep.Read()
if pkt == nil {
if pkt.IsNil() {
return
}
@ -168,14 +167,13 @@ func (tun *netTun) WriteNotify() {
func (tun *netTun) Close() error {
tun.stack.RemoveNIC(1)
tun.stack.Close()
tun.ep.RemoveNotify(tun.notifyHandle)
tun.ep.Close()
if tun.events != nil {
close(tun.events)
}
tun.ep.Close()
if tun.incomingPacket != nil {
close(tun.incomingPacket)
}

2
tun/offload_linux.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tun

2
tun/offload_linux_test.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tun

2
tun/operateonfd.go
View file

@ -2,7 +2,7 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tun

2
tun/tun.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tun

36
tun/tun_darwin.go
View file

@ -1,17 +1,19 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tun
import (
"errors"
"fmt"
"io"
"net"
"os"
"sync"
"syscall"
"time"
"unsafe"
"golang.org/x/sys/unix"
@ -28,6 +30,18 @@ type NativeTun struct {
closeOnce sync.Once
}
func retryInterfaceByIndex(index int) (iface *net.Interface, err error) {
for i := 0; i < 20; i++ {
iface, err = net.InterfaceByIndex(index)
if err != nil && errors.Is(err, unix.ENOMEM) {
time.Sleep(time.Duration(i) * time.Second / 3)
continue
}
return iface, err
}
return nil, err
}
func (tun *NativeTun) routineRouteListener(tunIfindex int) {
var (
statusUp bool
@ -48,22 +62,26 @@ func (tun *NativeTun) routineRouteListener(tunIfindex int) {
return
}
if n < 28 {
if n < 14 {
continue
}
if data[3 /* ifm_type */] != unix.RTM_IFINFO {
if data[3 /* type */] != unix.RTM_IFINFO {
continue
}
ifindex := int(*(*uint16)(unsafe.Pointer(&data[12 /* ifm_index */])))
ifindex := int(*(*uint16)(unsafe.Pointer(&data[12 /* ifindex */])))
if ifindex != tunIfindex {
continue
}
flags := int(*(*uint32)(unsafe.Pointer(&data[8 /* ifm_flags */])))
iface, err := retryInterfaceByIndex(ifindex)
if err != nil {
tun.errors <- err
return
}
// Up / Down event
up := (flags & syscall.IFF_UP) != 0
up := (iface.Flags & net.FlagUp) != 0
if up != statusUp && up {
tun.events <- EventUp
}
@ -72,13 +90,11 @@ func (tun *NativeTun) routineRouteListener(tunIfindex int) {
}
statusUp = up
mtu := int(*(*uint32)(unsafe.Pointer(&data[24 /* ifm_data.ifi_mtu */])))
// MTU changes
if mtu != statusMTU {
if iface.MTU != statusMTU {
tun.events <- EventMTUUpdate
}
statusMTU = mtu
statusMTU = iface.MTU
}
}

2
tun/tun_freebsd.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tun

2
tun/tun_linux.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tun

2
tun/tun_openbsd.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tun

2
tun/tun_windows.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tun

2
tun/tuntest/tuntest.go
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2017-2025 WireGuard LLC. All Rights Reserved.
* Copyright (C) 2017-2023 WireGuard LLC. All Rights Reserved.
*/
package tuntest

2
version.go
View file

@ -1,3 +1,3 @@
package main
const Version = "0.0.20250522"
const Version = "0.0.20230223"