SQM only interface hotspot

Installing and Using OpenWrt
1

I don't want to limit all traffic but only interface hotpost.
i have this network
wan 192.168.1.1/24
lan 10.27.22.1/24
hotpost 172.27.22.1/24

default config is:

config queue 'eth1'
        option enabled '0'
        option interface 'eth1'
        option download '85000'
        option upload '10000'
        option qdisc 'fq_codel'
        option script 'simple.qos'
        option qdisc_advanced '0'
        option ingress_ecn 'ECN'
        option egress_ecn 'ECN'
        option qdisc_really_really_advanced '0'
        option itarget 'auto'
        option etarget 'auto'
        option linklayer 'none'

i change to:

config queue 'eth1'
	option qdisc_advanced '0'
	option ingress_ecn 'ECN'
	option egress_ecn 'ECN'
	option qdisc_really_really_advanced '0'
	option itarget 'auto'
	option etarget 'auto'
	option interface 'hotspot'
	option download '1000'
	option upload '3000'
	option linklayer 'ethernet'
	option overhead '22'
	option qdisc 'cake'
	option script 'piece_of_cake.qos'
	option enabled '1'

config queue 'eth1' ...because default eth1 if not exist? ..is name casual?
upload is real downloads for clients and download is real upload for clients?
Thanks.