On Tue, 18 Sep 2018 15:12:11 +0200, Johannes Berg wrote: > static int validate_nla(const struct nlattr *nla, int maxtype, > const struct nla_policy *policy, > - const char **error_msg) > + struct netlink_ext_ack *extack, bool *extack_set)
Can't the extack_set be included in the struct netlink_ext_ack? One less parameter to pass around and the NL_SET_* macros could check this on their own. This way, it can be also easily turned to a more complex mechanism, such as the one Marcelo proposed. Thanks, Jiri