Change Details

I have a scapy packet generator here[1] that will create fragments for UDP, TCP, and v6 in v6. It creates two fragments for TCP and v6 in v6 and sends them first fragment first and first fragment second, to test flushing the fragment chain on a bad first fragment. Because fragments other than the final one have to be a multiple of 8 bytes UDP, UDP-Lite, SCTP, ICMP6 and ESP will have to have valid headers to reach this check. [1]: https://people.freebsd.org/~thj/tests/sendfrag.py There is a fragment accounting issue I still need to track down, I suspect that short fragments aren't being accounted for and I am not accounting for the fragments in the existing chain when I clear it.

I have a scapy packet generator here[1] that will create fragments for UDP, TCP, and v6 in v6. It creates two fragments for TCP and v6 in v6 and sends them first fragment first and first fragment second, to test flushing the fragment chain on a bad first fragment. Because fragments other than the final one have to be a multiple of 8 bytes UDP, UDP-Lite, SCTP, ICMP6 and ESP will have to have valid headers to reach this check. [1]: https://people.freebsd.org/~thj/tests/sendfrag.py There is a fragment accounting issue I still need to track down, I suspect that short fragments aren't being accounted for and I am not accounting for the fragments in the existing chain when I clear it.

I have a scapy packet generator here[1] that will create fragments for UDP, TCP, and v6 in v6. It creates two fragments for TCP and v6 in v6 and sends them first fragment first and first fragment second, to test flushing the fragment chain on a bad first fragment. Because fragments other than the final one have to be a multiple of 8 bytes UDP, UDP-Lite, SCTP, ICMP6 and ESP will have to have valid headers to reach this check. [1]: https://people.freebsd.org/~thj/tests/sendfrag.py There is a fragment accounting issue I still need to track down, I suspect that short fragments aren't being accounted for and I am not accounting for the fragments in the existing chain when I clear it.