Hi all,

(this is a bit off topic but i'm sure AQM experts here can help me)

I'm playing with jitsi meet lately, which use up to 1800 kbits/s upload bandwidth (and auto adapt to the available bandwith).
I'm trying to limit the bandwidth of each client to a smaller value (1200 kbits), i can't do it in the client (firefox doesn't have the api right now), so i'm trying with TC to do per flow ingress limit.

Here is my test:

modprobe ifb numifbs=1
ip link set dev ifb0 up
#ip link set ifb0 txqueuelen 1000
tc qdisc add dev ifb0 root handle 1 hfsc default 1
tc class add dev ifb0 parent 1: classid 1:1 hfsc sc rate 100mbit ul rate 100mbit

for num in {10..1034}
do
tc class add dev ifb0 parent 1: classid 1:$num hfsc sc rate 1200kbit ul rate 1200kbit
tc qdisc add dev ifb0 parent 1:$num handle $num: codel
done
tc filter add dev ifb0 parent 1: handle 5 prio 1 flow map key proto-src divisor 1024 baseclass 1:10

tc qdisc add dev eno16780032 handle ffff: ingress
tc filter add dev eno16780032 parent ffff: protocol ip u32 match ip dport 10000 0xffff action mirred egress redirect dev ifb0

I know it's not working properly because a lot of traffic end up in HFSC default (1:1), but from what i understand all traffic should be caught by the flow map filter and end up in 1:10 to 1:1034 class

I've tried with/without txqueuelen, with/without codel qdisc, with HTB instead of HFSC, but no luck so far.

I'm on centos 7 (kernel 3.10 +)

Thanks in advance

Etienne