yggdrasil-network/yggdrasil-go
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have the core wrap and export the underlying PacketConn, move IPv6 ReadWriteCloser wrapper logic to a separate package

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This commit is contained in:
Arceliar 2021-07-05 13:14:12 -05:00
parent 35e8ff7c9d
commit f990a56046
11 changed files with 170 additions and 110 deletions
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19
src/tuntap/tun.go
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@ -21,8 +21,8 @@ import (
"github.com/yggdrasil-network/yggdrasil-go/src/address"
"github.com/yggdrasil-network/yggdrasil-go/src/config"
"github.com/yggdrasil-network/yggdrasil-go/src/core"
"github.com/yggdrasil-network/yggdrasil-go/src/defaults"
"github.com/yggdrasil-network/yggdrasil-go/src/ipv6rwc"
)
type MTU uint16
@ -32,7 +32,7 @@ type MTU uint16
// should pass this object to the yggdrasil.SetRouterAdapter() function before
// calling yggdrasil.Start().
type TunAdapter struct {
core *core.Core
rwc *ipv6rwc.ReadWriteCloser
config *config.NodeConfig
log *log.Logger
addr address.Address
@ -93,8 +93,8 @@ func MaximumMTU() uint64 {
// Init initialises the TUN module. You must have acquired a Listener from
// the Yggdrasil core before this point and it must not be in use elsewhere.
func (tun *TunAdapter) Init(core *core.Core, config *config.NodeConfig, log *log.Logger, options interface{}) error {
tun.core = core
func (tun *TunAdapter) Init(rwc *ipv6rwc.ReadWriteCloser, config *config.NodeConfig, log *log.Logger, options interface{}) error {
tun.rwc = rwc
tun.config = config
tun.log = log
return nil
@ -119,9 +119,8 @@ func (tun *TunAdapter) _start() error {
if tun.config == nil {
return errors.New("no configuration available to TUN")
}
pk := tun.core.PublicKey()
tun.addr = *address.AddrForKey(pk)
tun.subnet = *address.SubnetForKey(pk)
tun.addr = tun.rwc.Address()
tun.subnet = tun.rwc.Subnet()
addr := fmt.Sprintf("%s/%d", net.IP(tun.addr[:]).String(), 8*len(address.GetPrefix())-1)
if tun.config.IfName == "none" || tun.config.IfName == "dummy" {
tun.log.Debugln("Not starting TUN as ifname is none or dummy")
@ -130,8 +129,8 @@ func (tun *TunAdapter) _start() error {
return nil
}
mtu := tun.config.IfMTU
if tun.core.MaxMTU() < mtu {
mtu = tun.core.MaxMTU()
if tun.rwc.MaxMTU() < mtu {
mtu = tun.rwc.MaxMTU()
}
if err := tun.setup(tun.config.IfName, addr, mtu); err != nil {
return err
@ -139,7 +138,7 @@ func (tun *TunAdapter) _start() error {
if tun.MTU() != mtu {
tun.log.Warnf("Warning: Interface MTU %d automatically adjusted to %d (supported range is 1280-%d)", tun.config.IfMTU, tun.MTU(), MaximumMTU())
}
tun.core.SetMTU(tun.MTU())
tun.rwc.SetMTU(tun.MTU())
tun.isOpen = true
tun.isEnabled = true
go tun.read()