netdev - Re: [PATCH net] net: don't warn in inet diag when IPV6 is disabled

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Date:   Tue, 02 Jul 2019 14:23:47 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     stephen@...workplumber.org
Cc:     kuznet@....inr.ac.ru, yoshfuji@...ux-ipv6.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH net] net: don't warn in inet diag when IPV6 is disabled

From: Stephen Hemminger <stephen@...workplumber.org>
Date: Mon,  1 Jul 2019 08:23:03 -0700

> @@ -19,9 +19,11 @@ raw_get_hashinfo(const struct inet_diag_req_v2 *r)
>  {
>  	if (r->sdiag_family == AF_INET) {
>  		return &raw_v4_hashinfo;
> -#if IS_ENABLED(CONFIG_IPV6)
>  	} else if (r->sdiag_family == AF_INET6) {
> +#if IS_ENABLED(CONFIG_IPV6)
>  		return &raw_v6_hashinfo;
> +#else
> +		return ERR_PTR(-EOPNOTSUPP);
>  #endif
>  	} else {
>  		pr_warn_once("Unexpected inet family %d\n",

Let's make some consistency in this area please.

The inet_diag code returns -EINVAL, and that's been that way forever.
It also doesn't print a weird warning for unexpected sdiag_family
values outside of AF_INET and AF_INET6.

That's been that way for so long that's probably the behavior to
revolve everything around.

Therefore, please just get rid of the warning message instead of
all of these other changes.

Thank you.