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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2019-03-13 02:52:32 -0600 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2019-03-13 02:52:32 -0600 |
| commit | b0e0ab308dd25651fa306e07071624032dab5eab (patch) | |
| tree | 49260ce807c0aecb5540928c353eb48bc62148aa | |
| parent | 66fb5caf023eb893b5d3fbbda5009749d217a68b (diff) | |
tun: windows: temporary hack for forcing MTU
| -rw-r--r-- | tun/tun_windows.go | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/tun/tun_windows.go b/tun/tun_windows.go index 4c48af5..579e65c 100644 --- a/tun/tun_windows.go +++ b/tun/tun_windows.go @@ -46,6 +46,7 @@ type NativeTun struct { userClose windows.Handle events chan TUNEvent errors chan error + forcedMtu int } func packetAlign(size uint32) uint32 { @@ -100,6 +101,7 @@ func CreateTUN(ifname string) (TUNDevice, error) { wrBuff: &exchgBufWrite{}, events: make(chan TUNEvent, 10), errors: make(chan error, 1), + forcedMtu: 1500, } // Create close event. @@ -220,7 +222,12 @@ func (tun *NativeTun) Close() error { } func (tun *NativeTun) MTU() (int, error) { - return 1500, nil + return tun.forcedMtu, nil +} + +//TODO: This is a temporary hack. We really need to be monitoring the interface in real time and adapting to MTU changes. +func (tun *NativeTun) ForceMtu(mtu int) { + tun.forcedMtu = mtu } func (tun *NativeTun) Read(buff []byte, offset int) (int, error) { |