add cls_flower support

[svinota]

Discussed in #1283

^{Originally posted by tsv1991 February 13, 2025}
I'd like to use flower action for tc. Linux command looks:

tc qdisc add dev br0 clsact
tc filter add dev br100 ingress protocol ip pref 2 flower dst_ip 192.168.2.0/24 action pass
tc filter add dev br100 ingress protocol ipv6 pref 3 flower dst_ip fc03::/64 action pass
tc filter add dev br100 egress protocol ip pref 2 flower src_ip 192.168.2.0/24 action pass
tc filter add dev br100 egress protocol ipv6 pref 3 flower src_ip fc03::/64 action pass

Can you tell me how I can do that?

I tied to do some thing like that:

ipr.tc("add-filter", "flower", index=idx, parent="ffff:fff2", prio=pref, protocol=protocol, 
                      action=[{"kind": "pass"}], "dst": "192.168.2.0/24")

But it doesn't work.