netdev - Re: [PATCH net] sock_diag: request _diag module only when the family or proto has been registered

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Message-ID: <1508238974.31614.91.camel@edumazet-glaptop3.roam.corp.google.com>
Date:   Tue, 17 Oct 2017 04:16:14 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Xin Long <lucien.xin@...il.com>
Cc:     network dev <netdev@...r.kernel.org>, davem@...emloft.net,
        Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
        Sabrina Dubroca <sd@...asysnail.net>
Subject: Re: [PATCH net] sock_diag: request _diag module only when the
 family or proto has been registered

On Tue, 2017-10-17 at 13:13 +0800, Xin Long wrote:

> +bool sock_is_registered(int family)
> +{
> +	return family < NPROTO && rcu_access_pointer(net_families[family]);
> +}

EXPORT_SYMBOL() ?