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https://github.com/cwinfo/yggdrasil-go.git
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Fix TAP support
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b4513ca2e8
commit
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@ -169,7 +169,6 @@ func (i *ICMPv6) UnmarshalPacket(datain []byte, datamac *[]byte) ([]byte, error)
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if err != nil {
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if err != nil {
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return nil, err
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return nil, err
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}
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}
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// Send it back
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// Send it back
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return responsePacket, nil
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return responsePacket, nil
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} else {
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} else {
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@ -186,7 +185,7 @@ func (i *ICMPv6) UnmarshalPacket(datain []byte, datamac *[]byte) ([]byte, error)
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copy(addr[:], ipv6Header.Src[:])
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copy(addr[:], ipv6Header.Src[:])
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copy(target[:], datain[48:64])
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copy(target[:], datain[48:64])
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copy(mac[:], (*datamac)[:])
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copy(mac[:], (*datamac)[:])
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// i.tun.core.log.Printf("Learning peer MAC %x for %x\n", mac, target)
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// fmt.Printf("Learning peer MAC %x for %x\n", mac, target)
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neighbor := i.peermacs[target]
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neighbor := i.peermacs[target]
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neighbor.mac = mac
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neighbor.mac = mac
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neighbor.learned = true
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neighbor.learned = true
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@ -114,7 +114,6 @@ func (tun *TunAdapter) Init(config *config.NodeState, log *log.Logger, listener
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tun.dialer = dialer
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tun.dialer = dialer
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tun.addrToConn = make(map[address.Address]*yggdrasil.Conn)
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tun.addrToConn = make(map[address.Address]*yggdrasil.Conn)
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tun.subnetToConn = make(map[address.Subnet]*yggdrasil.Conn)
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tun.subnetToConn = make(map[address.Subnet]*yggdrasil.Conn)
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tun.icmpv6.Init(tun)
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}
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}
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// Start the setup process for the TUN/TAP adapter. If successful, starts the
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// Start the setup process for the TUN/TAP adapter. If successful, starts the
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@ -175,6 +174,7 @@ func (tun *TunAdapter) Start() error {
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}()
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}()
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go tun.handler()
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go tun.handler()
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go tun.ifaceReader()
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go tun.ifaceReader()
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tun.icmpv6.Init(tun)
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return nil
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return nil
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}
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}
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@ -328,17 +328,20 @@ func (tun *TunAdapter) ifaceReader() error {
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}
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}
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// If it's a TAP adapter, update the buffer slice so that we no longer
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// If it's a TAP adapter, update the buffer slice so that we no longer
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// include the ethernet headers
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// include the ethernet headers
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offset := 0
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if tun.iface.IsTAP() {
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if tun.iface.IsTAP() {
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bs = bs[tun_ETHER_HEADER_LENGTH:]
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// Set our offset to beyond the ethernet headers
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}
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offset = tun_ETHER_HEADER_LENGTH
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// If we detect an ICMP packet then hand it to the ICMPv6 module
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// If we detect an ICMP packet then hand it to the ICMPv6 module
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if bs[6] == 58 {
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if bs[offset+6] == 58 {
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if tun.iface.IsTAP() {
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// Found an ICMPv6 packet
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// Found an ICMPv6 packet
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b := make([]byte, n)
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b := make([]byte, n)
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copy(b, bs)
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copy(b, bs)
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go tun.icmpv6.ParsePacket(b)
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go tun.icmpv6.ParsePacket(b)
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}
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}
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// Then offset the buffer so that we can now just treat it as an IP
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// packet from now on
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bs = bs[offset:]
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}
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}
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// From the IP header, work out what our source and destination addresses
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// From the IP header, work out what our source and destination addresses
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// and node IDs are. We will need these in order to work out where to send
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// and node IDs are. We will need these in order to work out where to send
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@ -357,7 +360,7 @@ func (tun *TunAdapter) ifaceReader() error {
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continue
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continue
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}
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}
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// Check the packet size
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// Check the packet size
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if n != 256*int(bs[4])+int(bs[5])+tun_IPv6_HEADER_LENGTH {
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if n != 256*int(bs[4])+int(bs[5])+offset+tun_IPv6_HEADER_LENGTH {
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continue
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continue
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}
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}
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// IPv6 address
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// IPv6 address
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@ -371,7 +374,7 @@ func (tun *TunAdapter) ifaceReader() error {
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continue
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continue
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}
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}
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// Check the packet size
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// Check the packet size
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if bs[0]&0xf0 == 0x40 && n != 256*int(bs[2])+int(bs[3]) {
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if n != 256*int(bs[2])+int(bs[3])+offset {
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continue
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continue
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}
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}
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// IPv4 address
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// IPv4 address
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