On Thu, Mar 11, 2021 at 12:33 PM [email protected] <[email protected]> wrote:
> I am trying to find out way how to port my Linux netfilter into OpenBSD pf.
>
> I want to prioritize small new SYN connection SYN/ACK, ACK.
>
> In Linux I simply set a packet size 0-128 bytes that covers usual 3-way
> handshake. This simple rule makes all faster.
>
> There seems to be no "packet size" capability in OpenBSD.
>
> Something similiar used for small packets under OpenBSD
>
> match out on egress set prio (5, 6)
>
>
> next thing what may work is playing with packet flags
>
> SYN is start of new connection so "pass out flags S/" and SYN-ACK with
> flags SA/ should do the trick no?
>
> There is just small ACK packets left. I wonder what is solution for
> small packets in OpenBSD

I believe quantum is what you are looking for--see the QUEUEING
section in pf.conf(5).

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