Subject: Re: [RFC 4/5] netlink: prepare validate extack setting for recursion

From: Jiri Benc <[email-masked]>
Date: Wed, 19 Sep 2018 11:10:48 +0200

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