On Tue, Jun 18, 2019 at 1:40 PM Florian Westphal <fw@xxxxxxxxx> wrote:
>
> Problem is that we do not keep any state. Syncookes are restricted to 4
> mss value:
> static __u16 const msstab[] = {
> 536,
> 1300,
> 1440, /* 1440, 1452: PPPoE */
> 1460,
> };
>
> So, 1260 forces lowest value supported.
>
> The table was based off a research paper that had mss distribution
> tables. Maybe more recent data is available and if things have changed
> we could update the table accordingly.
I am confused. So this statement from manual page is just a illusion?
--mss maximum segment size
Maximum segment size announced to clients. This must
match the backend.
I don't understand why these restriction exist. Why can't we set mss
value same as what client send to us?
