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Don't allow exceeding maximum MTU for a given platform

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This commit is contained in:
Neil Alexander
2018-03-03 11:47:14 +00:00
parent 7c0102e43d
commit bec898a326
6 changed files with 46 additions and 5 deletions
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8
src/yggdrasil/tun_darwin.go
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@@ -10,6 +10,12 @@ import "golang.org/x/sys/unix"
import water "github.com/neilalexander/water"
func defaultTUNParameters() tunDefaultParameters {
return tunDefaultParameters{
maxMTU: 65535,
}
}
func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int) error {
if iftapmode {
tun.core.log.Printf("TAP mode is not supported on this platform, defaulting to TUN")
@@ -20,7 +26,7 @@ func (tun *tunDevice) setup(ifname string, iftapmode bool, addr string, mtu int)
panic(err)
}
tun.iface = iface
tun.mtu = mtu
tun.mtu = getMTUFromMax(mtu)
return tun.setupAddress(addr)
}