tun: import mobile particularities
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16
device/queueconstants_android.go
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16
device/queueconstants_android.go
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@ -0,0 +1,16 @@
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/* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
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*/
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package device
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/* Reduce memory consumption for Android */
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const (
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QueueOutboundSize = 1024
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QueueInboundSize = 1024
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QueueHandshakeSize = 1024
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MaxSegmentSize = 2200
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PreallocatedBuffersPerPool = 4096
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)
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@ -1,3 +1,5 @@
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// +build !android,!ios
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/* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
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@ -5,8 +7,6 @@
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package device
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/* Implementation specific constants */
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const (
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QueueOutboundSize = 1024
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QueueInboundSize = 1024
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18
device/queueconstants_ios.go
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18
device/queueconstants_ios.go
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@ -0,0 +1,18 @@
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// +build ios
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/* SPDX-License-Identifier: MIT
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*
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* Copyright (C) 2017-2019 WireGuard LLC. All Rights Reserved.
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*/
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package device
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/* Fit within memory limits for iOS's Network Extension API, which has stricter requirements */
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const (
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QueueOutboundSize = 1024
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QueueInboundSize = 1024
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QueueHandshakeSize = 1024
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MaxSegmentSize = 1700
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PreallocatedBuffersPerPool = 1024
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)
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@ -171,7 +171,7 @@ func CreateTUNFromFile(file *os.File, mtu int) (TUNDevice, error) {
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tun := &NativeTun{
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tunFile: file,
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events: make(chan TUNEvent, 10),
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errors: make(chan error, 1),
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errors: make(chan error, 5),
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}
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name, err := tun.Name()
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@ -200,10 +200,12 @@ func CreateTUNFromFile(file *os.File, mtu int) (TUNDevice, error) {
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go tun.routineRouteListener(tunIfindex)
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err = tun.setMTU(mtu)
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if err != nil {
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tun.Close()
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return nil, err
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if mtu > 0 {
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err = tun.setMTU(mtu)
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if err != nil {
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tun.Close()
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return nil, err
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}
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}
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return tun, nil
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@ -443,3 +443,25 @@ func CreateTUNFromFile(file *os.File, mtu int) (TUNDevice, error) {
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return tun, nil
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}
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func CreateUnmonitoredTUNFromFD(tunFd int) (TUNDevice, string, error) {
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file := os.NewFile(uintptr(tunFd), "/dev/tun")
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tun := &NativeTun{
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tunFile: file,
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fd: file.Fd(),
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events: make(chan TUNEvent, 5),
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errors: make(chan error, 5),
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nopi: true,
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}
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var err error
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tun.fdCancel, err = rwcancel.NewRWCancel(int(tun.fd))
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if err != nil {
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return nil, "", err
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}
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name, err := tun.Name()
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if err != nil {
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tun.fdCancel.Cancel()
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return nil, "", err
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}
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return tun, name, nil
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}
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