Cake SQM priorize gaming and twitch streaming using DSCP

Installing and Using OpenWrt
1

My computer is wired to my router, a TP-Link Archer C60 v2 with OpenWrt 19.07.5 r11257-5090152ae3 / LuCI openwrt-19.07 branch git-20.341.57626-51f55b5 installed.

Current settings

root@OpenWrt:~# cat /etc/config/sqm

config queue 'eth1'
        option interface 'eth1'
        option debug_logging '0'
        option verbosity '5'
        option qdisc 'cake'
        option script 'piece_of_cake.qos'
        option linklayer 'ethernet'
        option overhead '44'
        option download '95000'
        option upload '95000'
        option enabled '1'
        option qdisc_advanced '1'
        option squash_dscp '1'
        option squash_ingress '1'
        option ingress_ecn 'ECN'
        option egress_ecn 'ECN'
        option qdisc_really_really_advanced '1'
        option linklayer_advanced '1'
        option tcMTU '1544'
        option linklayer_adaptation_mechanism 'default'
        option tcMPU '64'
        option iqdisc_opts 'diffserv4 ingress nat dual-dsthost'
        option eqdisc_opts 'diffserv4 nat dual-srchost'
        option tcTSIZE '128'

I would like to priorize my game and second the Twitch stream.
I tried to read a couple of posts but am a bit confused.

From what I have read what I'm looking for is DSCP marking for gaming. But I don't really understand how to configure it and where.
Using diffserv4 I understood there are 4 classes, and using DSCP I would be able to mark the packets of my game and the ones from my stream and put them in the correct class.

Just for context. I have a main router that belongs to the ISP and can not configure. That's why I'm using a second router mentioned before.
I asked them to enable DMZ on the main router using the IP of my secondary router.

2

You can create firewall traffic rules to dscp tag your packets. It will only work on the upstream direction but that's the direction that's most important for you.

3

Thanks for your reply. Could you point me to a guide for dummies? Most of this goes over my head.
I probably have no business messing with this complicated stuff, but I enjoy tinkering.
This a dumb question, but how do I find out which DSCP markings go in each bin of diffserv4?

EDIT
Found what I was looking for here

/*  Further pruned list of traffic classes for four-class system:
 *
 *	    Latency Sensitive  (CS7, CS6, EF, VA, CS5, CS4)
 *	    Streaming Media    (AF4x, AF3x, CS3, AF2x, TOS4, CS2, TOS1)
 *	    Best Effort        (CS0, AF1x, TOS2, and those not specified)
 *	    Background Traffic (CS1)
 *
 *		Total 4 traffic classes.
 */
4

try this but i not understand too

:slight_smile:

1 Like
5

That guide is a bit confusing. Specially without the images.

2 Likes
6

@Dopam-IT_1987
@redp

I have fixed the images and updated the guide slightly

1 Like
7

yes thanks for your help

:wink: