Re: question about traffic control in for input (ingress) traffic

Linux Advanced Routing and Traffic Control

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Kevin Wilson wrote:
Hello,
I know that traffic control is usually used for output.
I want to learn  traffic control kernel implementation for input
(ingress) traffic
I made several tries with the tc userspace tool to add
traffic control entries, but I did not succeed.

You can only add filters/policers to ingress, if you want to shape you have to use the ifb device and redirect traffic to it with a filter.

eg.

modprobe ifb
tc qdisc add dev eth0 ingress
ip link set ifb0 up

tc filter add dev eth0 parent ffff: \
protocol ip prio 10 u32 match u32 0 0 flowid 1:0 \
action mirred egress redirect dev ifb0

Then you add normal qdiscs etc to ifb0 just like you would for output.

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