yggdrasil-network/yggdrasil-go
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Update water go.mod references, fix some bugs in TAP mode (which should hopefully fix Windows support too)

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This commit is contained in:
Neil Alexander 2019-07-20 16:13:54 +01:00
parent 36201895e7
commit 48ad3c5d7f
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GPG key ID: A02A2019A2BB0944
5 changed files with 33 additions and 18 deletions
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14
src/tuntap/icmpv6.go
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@ -78,8 +78,9 @@ func (i *ICMPv6) Init(t *TunAdapter) {
// Parses an incoming ICMPv6 packet. The packet provided may be either an
// ethernet frame containing an IP packet, or the IP packet alone. This is
// determined by whether the TUN/TAP adapter is running in TUN (layer 3) or
// TAP (layer 2) mode.
func (i *ICMPv6) ParsePacket(datain []byte) {
// TAP (layer 2) mode. Returns an error condition which is nil if the ICMPv6
// module handled the packet or contains the error if not.
func (i *ICMPv6) ParsePacket(datain []byte) error {
var response []byte
var err error
@ -91,11 +92,12 @@ func (i *ICMPv6) ParsePacket(datain []byte) {
}
if err != nil {
return
return err
}
// Write the packet to TUN/TAP
i.tun.iface.Write(response)
return nil
}
// Unwraps the ethernet headers of an incoming ICMPv6 packet and hands off
@ -105,7 +107,7 @@ func (i *ICMPv6) ParsePacket(datain []byte) {
func (i *ICMPv6) UnmarshalPacketL2(datain []byte) ([]byte, error) {
// Ignore non-IPv6 frames
if binary.BigEndian.Uint16(datain[12:14]) != uint16(0x86DD) {
return nil, nil
return nil, errors.New("Ignoring non-IPv6 frame")
}
// Hand over to ParsePacket to interpret the IPv6 packet
@ -141,12 +143,12 @@ func (i *ICMPv6) UnmarshalPacket(datain []byte, datamac *[]byte) ([]byte, error)
// Check if the packet is IPv6
if ipv6Header.Version != ipv6.Version {
return nil, err
return nil, errors.New("Ignoring non-IPv6 packet")
}
// Check if the packet is ICMPv6
if ipv6Header.NextHeader != 58 {
return nil, err
return nil, errors.New("Ignoring non-ICMPv6 packet")
}
// Parse the ICMPv6 message contents