On 07/09, Mahe Tardy wrote:

This test is similar to test_icmp_send_unreach_cgroup but checks that,
in case of recursion, meaning that the BPF program calling the kfunc was
re-triggered by the icmp_send done by the kfunc, the kfunc will stop
early and return -EBUSY.

The test attaches to the root cgroup to ensure the ICMP packet generated
by the kfunc re-triggers the BPF program.

Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Reviewed-by: Jordan Rife <redacted>
Signed-off-by: Mahe Tardy <redacted>

Acked-by: Stanislav Fomichev <sdf@fomichev.me>