Newbie help

Hello everyone,
I am trying to follow this tutorial
(https://developers.redhat.com/blog/2021/04/01/get-started-with-xdp)
to learn XDP.

So I compiled my XDP program and then attached it to an interface:

lorenzo@kwaremont:~/progetti/xdp_test$ ip addr show eno1
2: eno1: <NO-CARRIER,BROADCAST,MULTICAST,DYNAMIC,UP> mtu 1500
xdpgeneric/id:37 qdisc pfifo_fast state DOWN group default qlen 1000
    link/ether 8c:dc:d4:8e:38:c7 brd ff:ff:ff:ff:ff:ff
    altname enp9s0
    inet 10.0.8.1/24 scope global eno1
       valid_lft forever preferred_lft forever
lorenzo@kwaremont:~/progetti/xdp_test$ ping 10.0.8.1
PING 10.0.8.1 (10.0.8.1) 56(84) bytes of data.
64 bytes from 10.0.8.1: icmp_seq=1 ttl=64 time=0.047 ms
64 bytes from 10.0.8.1: icmp_seq=2 ttl=64 time=0.033 ms
^C
--- 10.0.8.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1018ms
rtt min/avg/max/mdev = 0.033/0.040/0.047/0.007 ms

Anyway, it seems that the program is not dropping packets. Is there
any way to troubleshoot it? Where am I wrong?

Thank you

-- 
LORENZO MAINARDI