Speed limit per socket on server

speed-limit.sh

#!/bin/bash

function speed_limit {

dev=$1
speed=$2

for i in $(seq 1 1024); do

h=$(printf %x $i)

tc class add dev $dev parent 1025: classid 1025:$h htb rate $speed burst 100k

done

tc filter add dev $dev protocol ip handle 1025 parent 1025: flow hash keys src,dst,proto,proto-src,proto-dst divisor 1024 perturb 10

}

function speed_limit_total {

dev_down=$1
speed_down=$2
dev_up=$3
speed_up=$4

tc qdisc del dev $dev_down root
tc qdisc del dev $dev_up root
tc qdisc del dev $dev_down ingress

tc qdisc add dev $dev_down ingress
tc filter add dev $dev_down parent ffff: protocol ip u32 match u32 0 0 action mirred egress redirect dev $dev_up

tc qdisc add dev $dev_down root handle 1025: htb r2q 100

tc qdisc add dev $dev_up root handle 1025: htb r2q 100

speed_limit $dev_down $speed_down
speed_limit $dev_up $speed_up

}

modprobe ifb
ip link set dev ifb0 up

speed_from_server_to_client=2.2Mbit
speed_from_client_to_server=1.8Mbit

speed_limit_total eth0 $speed_from_server_to_client ifb0 $speed_from_client_to_server