mirror of
https://github.com/cwinfo/yggdrasil-go.git
synced 2024-12-23 04:05:39 +00:00
Modify ICMPv6 source address for "Packet Too Big" messages to a routable address so that it correctly routes to nodes in an yggdrasil /64 subnet
This commit is contained in:
parent
0dc1dd6292
commit
bf0413a0c4
@ -130,7 +130,9 @@ func (i *icmpv6) parse_packet_tun(datain []byte) ([]byte, error) {
|
||||
response, err := i.handle_ndp(datain[ipv6.HeaderLen:])
|
||||
if err == nil {
|
||||
// Create our ICMPv6 response
|
||||
responsePacket, err := i.create_icmpv6_tun(ipv6Header.Src, ipv6.ICMPTypeNeighborAdvertisement, 0,
|
||||
responsePacket, err := i.create_icmpv6_tun(
|
||||
ipv6Header.Src, i.mylladdr,
|
||||
ipv6.ICMPTypeNeighborAdvertisement, 0,
|
||||
&icmp.DefaultMessageBody{Data: response})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
@ -147,9 +149,9 @@ func (i *icmpv6) parse_packet_tun(datain []byte) ([]byte, error) {
|
||||
return nil, errors.New("ICMPv6 type not matched")
|
||||
}
|
||||
|
||||
func (i *icmpv6) create_icmpv6_tap(dstmac macAddress, dst net.IP, mtype ipv6.ICMPType, mcode int, mbody icmp.MessageBody) ([]byte, error) {
|
||||
func (i *icmpv6) create_icmpv6_tap(dstmac macAddress, dst net.IP, src net.IP, mtype ipv6.ICMPType, mcode int, mbody icmp.MessageBody) ([]byte, error) {
|
||||
// Pass through to create_icmpv6_tun
|
||||
ipv6packet, err := i.create_icmpv6_tun(dst, mtype, mcode, mbody)
|
||||
ipv6packet, err := i.create_icmpv6_tun(dst, src, mtype, mcode, mbody)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
@ -167,7 +169,7 @@ func (i *icmpv6) create_icmpv6_tap(dstmac macAddress, dst net.IP, mtype ipv6.ICM
|
||||
return dataout, nil
|
||||
}
|
||||
|
||||
func (i *icmpv6) create_icmpv6_tun(dst net.IP, mtype ipv6.ICMPType, mcode int, mbody icmp.MessageBody) ([]byte, error) {
|
||||
func (i *icmpv6) create_icmpv6_tun(dst net.IP, src net.IP, mtype ipv6.ICMPType, mcode int, mbody icmp.MessageBody) ([]byte, error) {
|
||||
// Create the ICMPv6 message
|
||||
icmpMessage := icmp.Message{
|
||||
Type: mtype,
|
||||
@ -176,7 +178,7 @@ func (i *icmpv6) create_icmpv6_tun(dst net.IP, mtype ipv6.ICMPType, mcode int, m
|
||||
}
|
||||
|
||||
// Convert the ICMPv6 message into []byte
|
||||
icmpMessageBuf, err := icmpMessage.Marshal(icmp.IPv6PseudoHeader(i.mylladdr, dst))
|
||||
icmpMessageBuf, err := icmpMessage.Marshal(icmp.IPv6PseudoHeader(src, dst))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
@ -187,7 +189,7 @@ func (i *icmpv6) create_icmpv6_tun(dst net.IP, mtype ipv6.ICMPType, mcode int, m
|
||||
NextHeader: 58,
|
||||
PayloadLen: len(icmpMessageBuf),
|
||||
HopLimit: 255,
|
||||
Src: i.mylladdr,
|
||||
Src: src,
|
||||
Dst: dst,
|
||||
}
|
||||
|
||||
|
@ -163,7 +163,9 @@ func (r *router) sendPacket(bs []byte) {
|
||||
}
|
||||
|
||||
// Create the ICMPv6 response from it
|
||||
icmpv6Buf, err := r.core.tun.icmpv6.create_icmpv6_tun(bs[8:24], ipv6.ICMPTypePacketTooBig, 0, ptb)
|
||||
icmpv6Buf, err := r.core.tun.icmpv6.create_icmpv6_tun(
|
||||
bs[8:24], bs[24:40],
|
||||
ipv6.ICMPTypePacketTooBig, 0, ptb)
|
||||
if err == nil {
|
||||
r.recv <- icmpv6Buf
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user