6d2d58f1b7
Daniel discovered recently I broke TC filter replace (and fixed it in commit ad9294dbc227 ("bpf: fix cls_bpf on filter replace")). Add a test to make sure it never happens again. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>