On 2020-10-16 12:42 p.m., Vlad Buslov wrote:

All action print callbacks have arg==NULL check and return at the
beginning. To print action type we need either to have dedicated
'brief_dump' callback instead of reusing print_aop() or extend/refactor
print_aop() implementation for all actions to always print the type
before checking the arg. What do you suggest?

Either one sounds appealing - the refactoring feels simpler
as opposed to a->terse_print().

BTW: the action index, unless i missed something, is not transported
from the kernel for terse option. It is an important parameter
when actions are shared by filters (since they will have the same
index).
Am i missing something?

cheers,
jamal