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[client] Add flag to configure MTU (#4213)

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This commit is contained in:
Viktor Liu
2025-08-26 16:00:14 +02:00
committed by GitHub
parent 9f84165763
commit f063866ce8
54 changed files with 710 additions and 434 deletions
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13
client/iface/device/device_kernel_unix.go
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@@ -24,7 +24,7 @@ type TunKernelDevice struct {
address wgaddr.Address
wgPort int
key string
mtu int
mtu uint16
ctx context.Context
ctxCancel context.CancelFunc
transportNet transport.Net
@@ -36,7 +36,7 @@ type TunKernelDevice struct {
filterFn bind.FilterFn
}
func NewKernelDevice(name string, address wgaddr.Address, wgPort int, key string, mtu int, transportNet transport.Net) *TunKernelDevice {
func NewKernelDevice(name string, address wgaddr.Address, wgPort int, key string, mtu uint16, transportNet transport.Net) *TunKernelDevice {
ctx, cancel := context.WithCancel(context.Background())
return &TunKernelDevice{
ctx: ctx,
@@ -66,7 +66,7 @@ func (t *TunKernelDevice) Create() (WGConfigurer, error) {
// TODO: do a MTU discovery
log.Debugf("setting MTU: %d interface: %s", t.mtu, t.name)
if err := link.setMTU(t.mtu); err != nil {
if err := link.setMTU(int(t.mtu)); err != nil {
return nil, fmt.Errorf("set mtu: %w", err)
}
@@ -96,7 +96,7 @@ func (t *TunKernelDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
return nil, err
}
rawSock, err := sharedsock.Listen(t.wgPort, sharedsock.NewIncomingSTUNFilter())
rawSock, err := sharedsock.Listen(t.wgPort, sharedsock.NewIncomingSTUNFilter(), t.mtu)
if err != nil {
return nil, err
}
@@ -111,6 +111,7 @@ func (t *TunKernelDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
Net: t.transportNet,
FilterFn: t.filterFn,
WGAddress: t.address,
MTU: t.mtu,
}
mux := bind.NewUniversalUDPMuxDefault(bindParams)
go mux.ReadFromConn(t.ctx)
@@ -158,6 +159,10 @@ func (t *TunKernelDevice) WgAddress() wgaddr.Address {
return t.address
}
func (t *TunKernelDevice) MTU() uint16 {
return t.mtu
}
func (t *TunKernelDevice) DeviceName() string {
return t.name
}