Re: [PATCH v3 23/30] ipv6: defrag: drop non-last frags smaller than min mtu

Eric Dumazet
2019-01-11T10:57:44Z

On 01/10/2019 02:22 PM, Florian Westphal wrote:
> Tom Herbert <tom@herbertland.com> wrote:
>> I couldn't find any mention of the advisory in the commit logs or
>> netdev discussion, and apparently there's no protocol requirement that
>> intermediate fragements need to be at least minimal MTU. Maybe this
>> patch should be reverted?
>
> Currently ipv6 reasm doesn't use rbtree infrastructure, so it would
> have to be converted first.
>

<quote>
Section 4.5 of RFC 8200 allows for sending any fragment for
fragments as long they add up to the original packet.
</quote>

I do not believe we need an rbtree to implement this idea.