netdev - Re: [PATCH net] ipv6: no need to return rt->dst.error if it is not null entry.

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Message-ID: <CAM_iQpW4qj2N77QrCvt9jd6jhOGvyRye8eyBzzk+vXeUi_FaoQ@mail.gmail.com>
Date:   Mon, 24 Jul 2017 12:57:43 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Hangbin Liu <liuhangbin@...il.com>
Cc:     network dev <netdev@...r.kernel.org>,
        Roopa Prabhu <roopa@...ulusnetworks.com>
Subject: Re: [PATCH net] ipv6: no need to return rt->dst.error if it is not
 null entry.

On Sun, Jul 23, 2017 at 8:09 PM, Hangbin Liu <liuhangbin@...il.com> wrote:
> Do we still need this net->ipv6.ip6_null_entry check? How about remove all
> the checks?

I believe you only need to check for rt->dst.error, no need to check against
NULL or ip6_null_entry.

Take a look at other ip6_route_lookup() callers.